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Document and Entity Information - shares	6 Months Ended
Document and Entity Information - shares	Jun. 30, 2017	Aug. 09, 2017
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Jun. 30, 2017
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Trading Symbol	NNBR
Entity Registrant Name	NN INC
Entity Central Index Key	0000918541
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		27,540,093

Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Statement [Abstract]
Net sales	$ 225,875	$ 214,272	$ 452,189	$ 426,498
Cost of products sold (exclusive of depreciation and amortization shown separately below)	166,040	156,794	332,994	316,548
Selling, general and administrative expense	23,036	20,993	44,530	41,795
Depreciation and amortization	15,900	15,136	31,468	32,484
Restructuring and integration expense	306	4,047	446	6,585
Income from operations	20,593	17,302	42,751	29,086
Interest expense	12,409	16,631	27,365	33,053
Loss on extinguishment of debt and write-off of unamortized debt issuance costs	39,639		39,639
Derivative losses on change in interest rate swap fair value	101		13
Other (income) expense, net	645	(824)	(79)	(1,953)
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture	(32,201)	1,495	(24,187)	(2,014)
Provision (benefit) for income taxes	(9,428)	719	(7,128)	(31)
Share of net income from joint venture	1,244	1,343	2,937	2,743
Net income (loss)	(21,529)	2,119	(14,122)	760
Other comprehensive income (loss):
Change in fair value of interest rate swap		416		(219)
Foreign currency translation gain (loss)	9,240	(5,071)	14,244	2,152
Other comprehensive income (loss):	9,240	(4,655)	14,244	1,933
Comprehensive income (loss)	$ (12,289)	$ (2,536)	$ 122	$ 2,693
Basic net income (loss) per share:
Net income (loss)	$ (0.78)	$ 0.08	$ (0.52)	$ 0.03
Weighted average shares outstanding	27,468	27,024	27,358	26,923
Diluted net income (loss) per share:
Net income (loss)	$ (0.78)	$ 0.08	$ (0.52)	$ 0.03
Weighted average shares outstanding	27,468	27,187	27,358	27,050
Cash dividends per common share	$ 0.07	$ 0.07	$ 0.14	$ 0.14

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash	$ 19,166	$ 14,405
Accounts receivable, net	162,363	139,547
Inventories	123,702	114,851
Income tax receivable	8,631
Other current assets	13,766	11,752
Total current assets	327,628	280,555
Property, plant and equipment, net	333,160	322,953
Goodwill, net	452,282	450,311
Intangible assets, net	244,264	255,981
Investment in joint venture	39,853	36,008
Other non-current assets	8,629	9,892
Total assets	1,405,816	1,355,700
Current liabilities:
Accounts payable	78,308	75,719
Accrued salaries, wages and benefits	23,941	24,996
Income taxes payable		2,125
Current maturities of long-term debt	24,748	12,751
Current portion of obligation under capital lease	3,523	3,762
Other current liabilities	16,543	19,263
Total current liabilities	147,063	138,616
Deferred tax liabilities	99,333	99,591
Long-term debt, net of current portion	827,390	785,713
Accrued post-employment benefits	5,879	5,765
Obligation under capital lease, net of current portion	4,691	5,851
Other non-current liabilities	9,647	9,651
Total liabilities	1,094,003	1,045,187
Commitments and contingencies (Note 10)
Stockholders' equity:
Common stock - $0.01 par value, authorized 45,000 shares, issued and outstanding 27,537 in 2017 and 27,249 in 2016	275	272
Additional paid-in capital	288,903	284,508
Retained earnings	38,167	55,509
Accumulated other comprehensive income (loss)	(15,564)	(29,808)
Non-controlling interest	32	32
Total stockholders' equity	311,813	310,513
Total liabilities and stockholders' equity	$ 1,405,816	$ 1,355,700

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
Statement of Financial Position [Abstract]
Common Stock, par value	$ 0.01	$ 0.01
Common Stock, shares authorized	45,000,000	45,000,000
Common Stock, shares issued	27,537,000	27,249,000
Common Stock, shares outstanding	27,537,000	27,249,000

Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (loss) [Member]	Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2014	$ 172,989
Net income (loss)	(6,788)
Foreign currency translation gain	(25,011)
Ending Balance at Dec. 31, 2015	312,020
Net income (loss)	7,299
Foreign currency translation gain	(9,727)
Ending Balance at Dec. 31, 2016	310,513	$ 272	$ 284,508	$ 55,509	$ (29,808)	$ 32
Ending Balance, Shares at Dec. 31, 2016		27,249
Net income (loss)	7,407
Foreign currency translation gain	5,004
Ending Balance at Mar. 31, 2017	323,491
Beginning Balance at Dec. 31, 2016	310,513	$ 272	284,508	55,509	(29,808)	32
Beginning Balance, Shares at Dec. 31, 2016		27,249
Net income (loss)	(14,122)			(14,122)
Dividends paid	(3,960)			(3,960)
Stock option expense	575		575
Shares issued for option exercises	$ 2,592	$ 2	2,590
Shares issued for option exercises, shares	220	220
Restricted and performance based stock compensation expense	$ 1,644	$ 1	1,643
Restricted and performance based stock compensation expense, shares		85
Restricted shares forgiven for taxes and forfeited	(413)		(413)
Restricted shares forgiven for taxes and forfeited, shares		(17)
Foreign currency translation gain	14,244				14,244
Adoption of new accounting standard (see Note 1)	740			740
Ending Balance at Jun. 30, 2017	311,813	$ 275	288,903	38,167	(15,564)	32
Ending Balance, Shares at Jun. 30, 2017		27,537
Beginning Balance at Mar. 31, 2017	323,491
Net income (loss)	(21,529)
Foreign currency translation gain	9,240
Ending Balance at Jun. 30, 2017	$ 311,813	$ 275	$ 288,903	$ 38,167	$ (15,564)	$ 32
Ending Balance, Shares at Jun. 30, 2017		27,537

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ (14,122)	$ 760
Adjustments to reconcile net income to net cash provided by (used by) operating activities:
Depreciation and amortization	31,468	32,484
Amortization of debt issuance costs	2,153	1,986
Write-off of debt issuance costs	8,054
Share of net income from joint venture	(2,937)	(2,743)
Gain on disposals of property, plant and equipment	(268)
Compensation expense from issuance of share-based awards	2,218	2,485
Deferred income tax benefit		1,839
Other	638	2,048
Changes in operating assets and liabilities:
Accounts receivable	(20,062)	(24,048)
Inventories	(5,945)	1,713
Accounts payable	1,339	(3,239)
Income taxes payable (receivable)	(10,841)	(3,185)
Other assets and liabilities	(7,247)	1,681
Net cash provided by (used by) operating activities	(15,552)	11,781
Cash flows from investing activities:
Acquisition of property, plant and equipment	(20,658)	(18,223)
Proceeds from measurement period adjustments to previous acquisition		1,635
Proceeds from disposals of property, plant and equipment	356	215
Net cash used by investing activities	(20,302)	(16,373)
Cash flows from financing activities:
Debt issue costs paid	(6,545)
Dividends paid	(3,838)	(3,773)
Proceeds from long-term debt	317,000	11,000
Repayment of long-term debt	(266,874)	(5,875)
Proceeds from (repayment of) short-term debt, net	(101)	6,580
Proceeds from issuance of stock and exercise of stock options	2,592	1,525
Shares withheld to satisfy income tax withholding	(413)	(157)
Principal payments on capital leases	(2,059)	(2,462)
Net cash provided by financing activities	39,762	6,838
Effect of exchange rate changes on cash flows	853	(2,253)
Net change in cash and cash equivalents	4,761	(7)
Cash and cash equivalents at beginning of period	14,405	15,087
Cash and cash equivalents at end of period	$ 19,166	$ 15,080

Interim Financial Statements	6 Months Ended
Interim Financial Statements	Jun. 30, 2017
Quarterly Financial Information Disclosure [Abstract]
Interim Financial Statements	Note 1. Interim Financial Statements We are a diversified industrial company and a leading global manufacturer of high precision bearing components, industrial plastic products and precision metal components to a variety of markets on a global basis. We have 40 manufacturing plants in North America, Europe, South America and Asia. Our business is aggregated into three reportable segments- the Precision Bearing Components Group, the Precision Engineered Products Group (“PEP”) and the Autocam Precision Components Group. As used in this Quarterly Report on Form 10-Q, the terms “NN”, the “Company”, “we”, “our”, or “us” refer to NN, Inc. and its subsidiaries. The accompanying Condensed Consolidated Financial Statements of NN, Inc., have not been audited, except that the Condensed Consolidated Balance Sheet at December 31, 2016, was derived from our audited consolidated financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2016 (the “2016 Annual Report”), which was filed with the U.S. Securities and Exchange Commission (the “SEC”), on March 16, 2017. In our opinion, these Condensed Consolidated Financial Statements reflect all adjustments necessary to fairly state the results of operations for the three and six month periods ended June 30, 2017 and 2016, our financial position at June 30, 2017 and December 31, 2016, and the cash flows for the six month periods ended June 30, 2017 and 2016, on a basis consistent with our audited consolidated financial statements. These adjustments are of a normal recurring nature and are, in the opinion of management, necessary to present fairly our financial position and operating results for the interim periods. Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. These unaudited Condensed Consolidated Financial Statements should be read in conjunction with our audited consolidated financial statements and the notes thereto included in the 2016 Annual Report. The results for the six months ended June 30, 2017, are not necessarily indicative of results for the year ending December 31, 2017, or any other future periods. We have reclassified certain prior year amounts to conform to the current year’s presentation. Except for per share data or as otherwise indicated, all dollar amounts presented in the tables in these Notes to Condensed Consolidated Financial Statements are in thousands. Prior Periods’ Financial Statement Revision In connection with the preparation of our Condensed Consolidated Financial Statements as of and for the three and six months ended June 30, 2017, we identified misstatements in our previously issued financial statements related to the foreign currency translation of our investment in a China joint venture. We acquired a 49% investment in the joint venture as part of our acquisition of Autocam Corporation (“Autocam”) on August 29, 2014. The investment in the joint venture was remeasured to fair value at the time of the acquisition and has been accounted for under the equity method of accounting. Following the completion of the Autocam acquisition, the investment in the joint venture was accounted for in U.S. dollars whereas it should have been accounted for in the joint venture’s functional currency of the Chinese Renminbi in accordance with Accounting Standards Codification (“ASC”) Topic 830, Foreign Currency Matters. As a result, we did not correctly account for our investment in the joint venture and the related currency translation adjustment impacts. We previously corrected as out of period adjustments certain immaterial misstatements and reflected them in the prior period financial statements, where applicable. These immaterial previously recorded out of period adjustments were primarily due to misstatements related to the initial recording of deferred tax assets and liabilities and corresponding adjustments to goodwill as part of the purchase price allocations of the Autocam and PEP acquisitions in 2014 and 2015, the accounting for the goodwill balances from those acquisitions for multi-currency reporting through Other Comprehensive Income, and to record the mark to market adjustments on our interest rate hedge net of tax through Other Comprehensive Income. We assessed the materiality of the misstatements on prior periods’ financial statements in accordance with SEC Staff Accounting Bulletin (“SAB”) Topic 1.M, Materiality, codified in ASC Topic 250, Presentation of Financial Statements, (“ASC 250”) and concluded that the misstatements were not material to any prior annual or interim periods. In accordance with ASC 250 (SAB Topic 1.N, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements), we have corrected these misstatements for all prior periods presented by revising the Condensed Consolidated Financial Statements and other consolidated financial information included herein. We have revised, and will revise for annual and interim periods in future filings, for certain amounts in the consolidated financial statements in order to correct these misstatements. See Note 14 in these Notes to Condensed Consolidated Financial Statements for additional information. Newly Adopted Accounting Standards In March 2016, the Financial Accounting Standards Board (the “FASB”) issued Accounting Standards Update (“ASU”) 2016-09, Improvements to Employee Share-Based Payment Accounting. The new standard changes how companies account for certain aspects of share-based payments to employees. Entities must recognize the income tax effects of awards in the statement of operations when the awards vest or are settled (i.e., additional paid-in capital pools were eliminated). The guidance changed regarding employers’ accounting for an employee’s use of shares to satisfy the employer’s statutory income tax withholding obligation and for forfeitures. The guidance was effective for public business entities for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. As of January 1, 2017, we adopted ASU 2016-09, and the effects of the standard are reflected in the three and six months ended June 30, 2017, balances. Upon adoption, $0.7 million in historical tax benefits were reclassified from deferred taxes to retained earnings. Prospective tax benefits will be recognized in income tax expense. Tax payments in respect of shares withheld for taxes are now classified in the financing section of the statement of cash flows. The calculation of diluted earnings per share now excludes tax benefits that would have generated more dilutive shares. The effects of the adoption were not material to the financial statements. Issuance of New Accounting Standards Revenue Recognition. In May 2014, the FASB issued a new standard that provides a single, comprehensive revenue recognition model for all contracts with customers and supersedes most of the existing revenue recognition requirements. Under the new guidance, revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Factors that will affect pre-and post-implementation include, but are not limited to, identifying all the contracts that exist and whether incidental obligations or marketing incentives included in some of those contracts are performance obligations. Additionally, we are evaluating the transfer of control of certain consignment contracts which may impact the timing of revenue recognition under the new standard. The standard will be effective for us beginning January 1, 2018, with early adoption permitted. We believe the most appropriate approach for us to adopt the standard effective January 1, 2018, would be to utilize the full retrospective transition method to restate each prior reporting period presented. We continue to evaluate the adoption method as we progress through each phase of implementation. While our ability to adopt the standard using the full retrospective method depends on system readiness and completing our analysis of information necessary to restate prior period consolidated financial statements, we remain on schedule. We have completed a diagnostic accounting assessment, including an analysis of a representative sample of contracts, to identify areas that will be most significantly impacted by implementation of the new standard. We have also completed an initial training phase to educate contract managers of the technical aspects of the new standard. We are in the process of concluding on and documenting our assessments related to the standard as well as potential system and procedural changes. We are evaluating the impact the new standard will have on our financial condition, results of operations and cash flows. Our final evaluation of the impact of adopting the new standard is expected to be completed during 2017. Leases. In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 creates Topic 842, Leases, in the ASC and supersedes ASC 840, Leases. Entities that hold numerous equipment and real estate leases, in particular those with numerous operating leases, will be most affected by the new guidance. The lease accounting standard is effective for public companies beginning January 1, 2019, with modified retrospective adoption required and early adoption permitted. The amendments in ASU 2016-02 are expected to impact balance sheets at many companies by adding lease-related assets and liabilities. This may affect compliance with contractual agreements and loan covenants. We have performed inquiries within segment locations and compiled information on operating and capital leases. We are currently evaluating the impacts of the lease accounting standard on our financial position, results of operations, and related disclosures. Statement of Cash Flows. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. This standard provides clarification on how certain cash receipts and cash payments are presented and classified on the statement of cash flows. The standard is effective for us beginning January 1, 2018, and is required to be adopted using a retrospective approach if practicable, with early adoption permitted. We are in the process of assessing the effects of the standard on prior periods. Goodwill. In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, that eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of the current goodwill impairment test) to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on the current Step 1 test). The standard is effective for us beginning with impairment tests performed on or after January 1, 2020, with early adoption permitted. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures.

Inventories

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Inventories

Note 2. Inventories

Inventories are comprised of the following amounts:


	June 30, 2017		December 31, 2016
Raw materials	$	52,916	$	49,205
Work in process		34,786		31,348
Finished goods		36,000		34,298

Inventories	$	123,702	$	114,851

Inventories on consignment at customer locations as of June 30, 2017, and December 31, 2016 totaled $6.2 million and $5.0 million, respectively.

Inventories are stated at the lower of cost or net realizable value. Cost is determined using the average cost method. The inventory valuations above were developed using normalized production capacities for each of our manufacturing locations. Any costs from abnormal excess capacity or underutilization of fixed production overheads are expensed in the period incurred and are not included as a component of inventory valuation.

Net Income (Loss) Per Share

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Net Income (Loss) Per Share

Note 3. Net Income (Loss) Per Share


	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2017			2016		2017			2016
Net income (loss)	$	(21,529	)	$	2,119	$	(14,122	)	$	760
Weighted average shares outstanding		27,468			27,024		27,358			26,923
Effect of dilutive stock options		—			163		—			127

Diluted shares outstanding		27,468			27,187		27,358			27,050

Basic net income (loss) per share	$	(0.78	)	$	0.08	$	(0.52	)	$	0.03

Diluted net income (loss) per share	$	(0.78	)	$	0.08	$	(0.52	)	$	0.03

For both the three and six month periods ended June 30, 2016, approximately 0.9 million potentially dilutive stock options had the effect of being anti-dilutive and were excluded from the calculation of diluted net income per share. Given the net loss for the three and six months ended June 30, 2017, all options are considered anti-dilutive and were excluded from the calculation of diluted net loss per share.

Segment Information

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Information

Note 4. Segment Information

The segment information and the accounting policies of each segment are the same as those described in the Notes to Consolidated Financial Statements entitled “Segment Information” and “Summary of Significant Accounting Policies and Practices,” respectively, included in our 2016 Annual Report. Our business is aggregated into three reportable segments- the Precision Bearing Components Group, the Precision Engineered Products Group, and the Autocam Precision Components Group. We did not have any significant inter-segment transactions during the three and six month periods ended June 30, 2017 and 2016.


	Precision Bearing Components Group		Autocam Precision Components Group		Precision Engineered Products Group		Corporate and Consolidations			Total
Three Months ended June 30, 2017
Revenues from external customers	$	67,928	$	86,658	$	71,289	$	—		$	225,875
Income (loss) from operations	$	8,351	$	10,688	$	10,600	$	(9,046	)	$	20,593
Six Months ended June 30, 2017
Revenues from external customers	$	136,687	$	173,104	$	142,398	$	—		$	452,189
Income (loss) from operations	$	16,752	$	21,289	$	21,514	$	(16,804	)	$	42,751
Total assets	$	240,666	$	427,453	$	723,122	$	14,575		$	1,405,816
Three Months ended June 30, 2016
Revenues from external customers	$	65,157	$	82,991	$	66,124	$	—		$	214,272
Income (loss) from operations	$	6,474	$	7,770	$	10,782	$	(7,724	)	$	17,302
Six Months ended June 30, 2016
Revenues from external customers	$	129,902	$	166,981	$	129,615	$	—		$	426,498
Income (loss) from operations	$	12,800	$	14,297	$	16,203	$	(14,214	)	$	29,086
Total assets	$	226,943	$	418,664	$	740,475	$	8,651		$	1,394,733

Debt

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Debt

Note 5. Debt

Long-term and short-term debt at June 30, 2017, and December 31, 2016, consisted of the following amounts:


	June 30, 2017		December 31, 2016
$545.0 million Senior Secured Term Loan B (“Senior Secured Term Loan”) bearing interest at the greater of 0.75% or 1 month LIBOR (1.22% at June 30, 2017), plus an applicable margin of 4.25% at June 30, 2017, expiring October 19, 2022, net of debt issuance costs of $17.7 million at June 30, 2017, and $19.0 million at December 31, 2016	$	523,030	$	524,539
$300.0 million Incremental Term Loan (“Incremental Term Loan”) bearing interest at the greater of 0.75% or 1 month LIBOR (1.22% at June 30, 2017), plus an applicable margin of 3.75% at June 30, 2017, expiring April 3, 2021, net of debt issuance costs of $3.0 million at June 30, 2017		294,023		—
$143.0 million Senior Secured Revolver (“Senior Secured Revolver”) bearing interest at LIBOR (1.22% at June 30, 2017) plus an applicable margin of 3.5% at June 30, 2017, expiring October 19, 2020, net of debt issuance costs of $2.3 million at June 30, 2017, and $2.7 million at December 31, 2016		30,999		25,298
$250.0 million Senior Notes (“Senior Notes”) bearing interest at 10.25%, net of debt issuance costs of $4.9 million at December 31, 2016		—		245,077
French Safeguard Obligations (Autocam)		388		358
Brazilian lines of credit and equipment notes (Autocam)		379		573
Chinese line of credit (Autocam)		3,319		2,619

Total debt		852,138		798,464
Less current maturities of long-term debt		24,748		12,751

Long-term debt, excluding current maturities of long-term debt	$	827,390	$	785,713

On April 3, 2017, we redeemed our Senior Notes for $281.6 million resulting in a loss on debt extinguishment of $36.3 million, including $31.6 million cash paid for the call premium and a $4.7 million non-cash write-off of unamortized debt issuance costs. The Senior Notes were redeemed and the call premium was paid with the proceeds of a new $300.0 million Incremental Term Loan that was added by amendment to our existing credit facility. The Incremental Term Loan bears interest at the lower of 0.75% or one-month LIBOR, plus 3.75%, and matures on April 3, 2021, with payments of $3.0 million due quarterly. Concurrent with the amendment, the Senior Secured Revolver was reduced from $143.0 million to $100.0 million until such time as a certain leverage ratio covenant threshold has been met for four consecutive fiscal quarters. Upon satisfaction of the ratio threshold, the Senior Secured Revolver may be restored to $143.0 million. In connection with the amendment, we paid $6.5 million in debt issuance costs of which $4.0 million was recorded as a direct reduction to the carrying amount of the associated debt and $2.5 million was recognized as a loss on modification of the Senior Secured Term Loan. Debt issuance costs related to the amendment were paid with proceeds from the Incremental Term Loan. Also in connection with the amendment, we wrote off $0.8 million of unamortized debt issuance costs related to the modification of the Senior Secured Revolver.

The Incremental Term Loan is subject to a call premium in an amount equal to 1.0% of the aggregate principal amount outstanding at the time of any repricing event occurring prior to October 3, 2017. A repricing event is any prepayment or repayment of principal with the proceeds of any indebtedness bearing interest with an effective yield that is less than the effective yield applicable to the initial Incremental Term Loan.

As part of our acquisition of Autocam, we assumed certain foreign credit facilities. These facilities relate to local borrowings in France, Brazil, and China. These facilities are with financial institutions in the countries in which foreign plants operate and are used to fund working capital and equipment purchases in those countries. The following paragraphs describe these foreign credit facilities.

Our French operation (acquired with Autocam) has liabilities with certain creditors subject to Safeguard protection. The liabilities are being paid annually over a 10-year period until 2019 and carry a zero percent interest rate. Amounts due as of June 30, 2017, to those creditors opting to be paid over a 10-year period totaled $0.4 million, of which $0.1 million is included in current maturities of long-term debt and $0.3 million is included in long-term debt, net of current portion, on the Condensed Consolidated Balance Sheet.

The Brazilian equipment notes represent borrowings from certain Brazilian banks to fund equipment purchases for Autocam’s Brazilian plants. These credit facilities have annual interest rates ranging from 2.5% to 6.0%.

The Chinese line of credit is a working capital line of credit with a Chinese bank bearing an annual interest rate of approximately 4.6%.

Goodwill, Net

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill, Net

Note 6. Goodwill, Net

The changes in the carrying amount of goodwill, net, for the six months ended June 30, 2017, are as follows:


	Precision Bearing Components Group		Autocam Precision Components Group		Precision Engineered Products Group		Total
Balance as of December 31, 2016	$	8,909	$	70,717	$	370,685	$	450,311
Currency impacts		174		474		1,323		1,971

Balance as of June 30, 2017	$	9,083	$	71,191	$	372,008	$	452,282

The goodwill balances are tested for impairment on an annual basis during the fourth quarter and more often if a triggering event occurs. As of June 30, 2017, there were no indications of impairment at the reporting units with goodwill balances.

Intangible Assets, Net

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Intangible Assets, Net

Note 7. Intangible Assets, Net

The changes in the carrying amount of intangible assets, net, for the six months ended June 30, 2017, are as follows:


	Precision Bearing Components Group			Autocam Precision Components Group			Precision Engineered Products Group			Total
Balance as of December 31, 2016	$	1,718		$	42,928		$	211,335		$	255,981
Amortization		(104	)		(1,748	)		(9,933	)		(11,785	)
Currency impacts		70			(2	)		—			68

Balance as of June 30, 2017	$	1,684		$	41,178		$	201,402		$	244,264

Shared-Based Compensation

6 Months Ended

Jun. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Shared-Based Compensation

Note 8. Shared-Based Compensation

Share-based compensation expense during the three and six months ended June 30, 2017 and 2016, consisted of the following amounts:


	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Stock options	$	194	$	292	$	575	$	494
Restricted stock		395		710		855		1,358
Performance share units		477		482		788		633

Share-based compensation	$	1,066	$	1,484	$	2,218	$	2,485

Stock Options

During the six months ended June 30, 2017, we granted 125,700 option awards to officers and certain other key employees. The weighted average grant date fair value of options granted during the six months ended June 30, 2017, was $11.84 per share. The fair value of our options cannot be determined by market value, because our options are not traded in an open market. Accordingly, we utilized the Black Scholes financial pricing model to estimate the fair value. The weighted average assumptions relevant to determining the fair value of the 2017 stock option grants are below:


	2017 Stock Option Awards
Term		6 years
Risk free interest rate		2.03	%
Dividend yield		1.16	%
Expected volatility		56.56	%
Expected forfeiture rate		3.00	%

The following table provides a reconciliation of option activity for the six months ended June 30, 2017:


Options	Shares (000)			Weighted- Average Exercise Price (per share)		Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at January 1, 2017		897		$	12.22
Granted		126			24.20
Exercised		(220	)		11.81
Forfeited or expired		(6	)		7.72

Outstanding at June 30, 2017		797		$	14.22		6.6	$	10,538	(1)

Exercisable at June 30, 2017		555		$	12.17		5.5	$	8,490	(1)

⁽¹⁾	The intrinsic value is the amount by which the market price of our stock was greater than the exercise price of any individual option grant at June 30, 2017.

Restricted Stock

During the six months ended June 30, 2017, we granted 85,393 restricted stock awards to non-executive directors, officers and certain other key employees. The shares of restricted stock granted during the six months ended June 30, 2017, vest pro-rata over three years for officers and certain other key employees and over one year for non-executive directors. The fair value of the shares issued was determined by using the closing price of our common stock as of the date of grant. The weighted average grant date value of restricted stock granted in the six months ended June 30, 2017, was $24.29 per share.

Performance Share Units

During the six months ended June 30, 2017, we granted 98,618 performance share units to officers and certain other key employees. The performance share units granted will be satisfied in the form of shares of common stock during 2020 if certain performance and/or market conditions are met. We are recognizing the compensation expense over the three-year period in which the performance and market conditions are measured. The fair value per share of the performance share units issued was determined by using the grant date closing price of our common stock for the units with a performance condition, or $24.20, and a Monte Carlo valuation model for the units that have a market condition, or $29.84.

Income Taxes	6 Months Ended
Income Taxes	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 9. Income Taxes Our effective tax rate was 29% for the three and six months ended June 30, 2017. Our effective tax rate was 48% and 2% for the three and six months ended June 30, 2016, respectively. The loss on extinguishment of our Senior Notes impacted the 2017 tax rate and was treated as a discrete item during the three months ended June 30, 2017. The 2016 effective rate was impacted by changes in forecasted income and loss and driven by the application of the three- and six-month results against the permanent book to tax differences. The effective tax rates for 2017 and 2016 differ from the U.S. federal statutory rate of 34% due primarily to our earnings outside the United States that are indefinitely reinvested and taxed at rates lower than the U.S. federal statutory rate. Management believes that it is reasonably possible that the amount of unrecognized income tax benefits and interest may decrease during the next 12 months by approximately $0.6 million related to the expiration of the statutes of limitations, of which $0.5 million would reduce income tax expense.

Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Jun. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 10. Commitments and Contingencies Brazil ICMS Tax Matter Prior to our acquisition of Autocam, Autocam’s Brazilian subsidiary received notification from the Brazilian tax authorities regarding ICMS (state value added tax or VAT) tax credits claimed on intermediary materials (tooling and perishable items) used in the manufacturing process. The Brazilian tax authority notification disallowed state ICMS credits claimed on intermediary materials based on the argument that these items are not intrinsically related to the manufacturing process. Autocam Brazil filed an administrative defense with the Brazilian tax authority arguing, among other matters, that it should qualify for an ICMS tax credit, contending that the intermediary materials are directly related to the manufacturing process. We believe that we have substantial legal and factual defenses, and we plan to defend our interests in this matter vigorously. While we believe a loss is not probable, we estimate the range of possible losses related to this assessment is from $0 to $6.0 million. No amount was accrued at June 30, 2017, for this matter. There was no material change in the status of this matter from December 31, 2016 to June 30, 2017. We are entitled to indemnification from the former shareholders of Autocam, subject to the limitations and procedures set forth in the agreement and plan of merger relating to our acquisition of Autocam. Management believes the indemnification would include amounts owed for the tax, interest, and penalties related to this matter. All Other Legal Matters All other legal proceedings are of an ordinary and routine nature and are incidental to our operations. Management believes that such proceedings should not, individually or in the aggregate, have a material adverse effect on our business, financial condition, results of operations or cash flows. In making that determination, we analyze the facts and circumstances of each case at least quarterly in consultation with our attorneys and determine a range of reasonably possible outcomes.

Investment in Non-Consolidated Joint Venture

6 Months Ended

Jun. 30, 2017

Equity Method Investments and Joint Ventures [Abstract]

Investment in Non-Consolidated Joint Venture

Note 11. Investment in Non-Consolidated Joint Venture

As part of the Autocam acquisition, we own a 49% investment in a joint venture with an unrelated entity called Wuxi Weifu Autocam Precision Machinery Company, Ltd. (the “JV”), a Chinese company located in Wuxi, China. The JV is jointly controlled and managed, and it is being accounted for under the equity method.

Below are the components of our JV investment balance and activity for the six months ended June 30, 2017:


Balance as of December 31, 2016	$	36,008
Our share of earnings		3,165
Accretion of basis difference from purchase accounting		(228	)
Foreign currency translation gain		908

Balance as of June 30, 2017	$	39,853

The following table summarizes balance sheet information for the JV:


	June 30,		December 31,
	2017		2016
Current assets	$	40,712	$	31,295
Non-current assets		24,386		22,522

Total assets	$	65,098	$	53,817

Current liabilities	$	16,522	$	13,549
Non-current liabilities		6		—

Total liabilities	$	16,528	$	13,549

We had sales to the JV of approximately $0.1 and $0.1 million during the three and six months ended June 30, 2017. Amounts due to us from the JV were $0.1 million as of June 30, 2017.

Fair Value Measurements

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Fair Value Measurements

Note 12. Fair Value Measurements

We present fair value measurements and disclosures applicable to both our financial and nonfinancial assets and liabilities that are measured and reported on a fair value basis. Fair value is an exit price representing the expected amount we would receive to sell an asset or pay to transfer a liability in an orderly transaction with market participants at the measurement date. We have followed consistent methods and assumptions to estimate the fair values as more fully described in the 2016 Annual Report.

Our financial instruments that are subject to fair value disclosure consist of cash and cash equivalents, accounts receivable, accounts payable, derivatives and long-term debt. At June 30, 2017, the carrying values of all of these financial instruments approximated fair value. The fair value of floating-rate debt approximates the carrying amount because the interest rates paid are based on short-term maturities. As of June 30, 2017, we had no significant fixed-rate debt outstanding.

Fair value principles prioritize valuation inputs across three broad levels. Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities. Level 2 inputs are quoted prices for similar assets and liabilities in active markets or inputs that are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument. Level 3 inputs are unobservable inputs based on the assumptions used to measure assets and liabilities at fair value. An asset or liability’s classification within the various levels is determined based on the lowest level input that is significant to the fair value measurement.

The following table summarizes the assets and liabilities measured at fair value on a recurring basis for our interest rate swap derivative financial instrument:


				Fair Value Measurements at June 30, 2017
Description	June 30, 2017			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Derivative asset—current	$	5		$	—	$	5		$	—
Derivative asset—noncurrent		5			—		5			—
Derivative liability—current		(1,293	)		—		(1,293	)		—
Derivative liability—noncurrent		(464	)		—		(464	)		—

	$	(1,747	)	$	—	$	(1,747	)	$	—


				Fair Value Measurements at December 31, 2016
Description	December 31, 2016			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Derivative asset—current	$	69		$	—	$	69		$	—
Derivative asset—noncurrent		6			—		6			—
Derivative liability—current		(1,903	)		—		(1,903	)		—
Derivative liability—noncurrent		(1,028	)		—		(1,028	)		—

	$	(2,856	)	$	—	$	(2,856	)	$	—

Our policy is to manage interest expense using a mix of fixed and variable rate debt. To manage this mix effectively, we may enter into interest rate swaps in which we agree to exchange the difference between fixed and variable interest amounts calculated by reference to an agreed upon notional principal amount.

The inputs for determining fair value of the interest rate swap are classified as Level 2 inputs. Level 2 fair value is based on estimates using standard pricing models. These standard pricing models use inputs which are derived from or corroborated by observable market data such as interest rate yield curves, index forward curves, discount curves, and volatility surfaces. Counterparties to these derivative contracts are highly rated financial institutions which we believe carry only a minimal risk of nonperformance.

We have elected to present the derivative contracts on a gross basis in the Condensed Consolidated Balance Sheet included within other current assets, other non-current assets, other current liabilities and other non-current liabilities. To the extent we presented the derivative contract on a net basis, we would have a derivative in a net liability position of $1.7 million as of June 30, 2017. We do not have any cash collateral due under such agreements.

As of June 30, 2017, we reported no gains or losses in accumulated other comprehensive income related to the interest rate swaps. Additionally, during the three and six months ended June 30, 2016, when the interest rate swap was accounted for in accordance with hedge accounting, the periodic settlements and related reclassification of other comprehensive income was $0.5 million and $0.9 million, respectively, of net hedging losses on the interest rate swap in the interest expense line on the Condensed Consolidated Statements of Operations. We recognized $0.5 and $1.0 million of interest rate swap settlements during the three and six months ended June 30, 2017, in the “Derivative losses on change in interest rate swap fair value” line on the Condensed Consolidated Statements of Operations. If there are no changes in the interest rates for the next twelve months, we expect to make $1.3 million in cash payments related to the interest rate swap.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Restructuring and Integration

6 Months Ended

Jun. 30, 2017

Restructuring and Related Activities [Abstract]

Restructuring and Integration

Note 13. Restructuring and Integration

Restructuring and integration costs totaling $0.3 million and $4.0 million were recognized in the three months ended June 30, 2017 and 2016. Restructuring and integration costs totaling $0.4 million and $6.6 million were recognized in the six months ended June 30, 2017 and 2016.

Within the Precision Bearing Components Group, restructuring initiatives to optimize operations in the U.S., Italy, the Netherlands, Mexico and at segment headquarters resulted in a charge of $0.3 and $1.7 million for the three months ended June 30, 2017 and 2016, respectively, and $0.4 and $2.4 million for the six months ended June 30, 2017 and 2016. These charges consisted primarily of severance and other employee costs relating to personnel reductions.

Within the Autocam Precision Components Group, certain restructuring programs, including the closure of one facility, the Wheeling Plant, resulted in a charge of $6 thousand and $2.1 million for the three months ended June 30, 2017 and 2016, respectively, and $16 thousand and $3.6 million for the six months ended June 30, 2017 and 2016.

Within the Precision Engineered Products Group, initiatives resulted in integration, site closure and employee costs of $0.2 million and $0.6 million for the three and six months ended June 30, 2016. There were no charges in the three and six months ended June 30, 2017.

The following table summarizes restructuring and integration activity related to actions incurred for the three and six months ended June 30, 2017 and 2016:


	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Severance and other employee costs	$	306	$	1,814	$	446	$	3,390
Site closure and other associated costs		—		2,011		—		2,938
Integration and other associated costs		—		222		—		257

Total	$	306	$	4,047	$	446	$	6,585


	Reserve Balance at December 31, 2016		Charges		Paid in 2017			Reserve Balance at June 30, 2017
Severance and other employee costs	$	3,019	$	446	$	(1,673	)	$	1,792
Site closure and other associated costs		1,626		—		(614	)		1,012
Integration and other associated costs		—		—		—			—

Total	$	4,645	$	446	$	(2,287	)	$	2,804

The total restructuring and impairment costs are still being identified at the various segments; therefore, we are not able to estimate the ultimate costs at this time. We will include in future filings updates to these activities along with a reconciliation of beginning and ending liabilities recorded. The amounts recorded for the three and six months ended June 30, 2017, for restructuring charges that have been incurred are primarily expected to be paid out during 2017. Some amounts related to foreign locations extend through 2021.

Prior Periods Financial Statement Revision

6 Months Ended

Jun. 30, 2017

Accounting Changes and Error Corrections [Abstract]

Prior Periods Financial Statement Revision

Note 14. Prior Periods’ Financial Statement Revision

As described in Note 1 in these Notes to Condensed Consolidated Financial Statements, we have corrected misstatements for all prior periods presented by revising the Condensed Consolidated Financial Statements and other financial information included herein. We have not revised our Consolidated Statements of Cash Flows for any periods.

The following tables present the effect of the revision on our Condensed Consolidated Statements of Operations:


	Year Ended December 31, 2016
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	80,266		$	(37	)	$	80,229
Income from operations		59,400			37			59,437
Write-off of unamortized debt issuance costs		3,089			(500	)		2,589
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(7,309	)		537			(6,772	)
Provision (benefit) for income taxes		(9,313	)		1,180			(8,133	)
Net income (loss)		7,942			(643	)		7,299
Basic net income (loss) per share	$	0.29		$	(0.02	)	$	0.27
Diluted net income (loss) per share	$	0.29		$	(0.02	)	$	0.27


	Three Months Ended									Nine Months Ended
	September 30, 2016									September 30, 2016
	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	18,347		$	—			18,347		$	60,651		$	(509	)	$	60,142
Income (loss) from operations		18,727			—			18,727			47,304			509			47,813
Interest expense		16,337			(466	)		15,871			48,924			—			48,924
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(3,703	)		466			(3,237	)		(5,760	)		509			(5,251	)
Provision (benefit) for income taxes		(6,423	)		158			(6,265	)		(6,469	)		173			(6,296	)
Net income (loss)		4,147			308			4,455			4,879			336			5,215
Basic net income (loss) per share	$	0.15		$	0.01		$	0.16		$	0.18		$	0.01		$	0.19
Diluted net income (loss) per share	$	0.15		$	0.01		$	0.16		$	0.18		$	0.01		$	0.19


	Three Months Ended							Six Months Ended
	June 30, 2016							June 30, 2016
	As Previously Reported		Adjustment			As Revised		As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	21,592	$	(599	)	$	20,993	$	42,304		$	(509	)	$	41,795
Income from operations		16,703		599			17,302		28,577			509			29,086
Interest expense		16,165		466			16,631		32,587			466			33,053
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		1,362		133			1,495		(2,057	)		43			(2,014	)
Provision (benefit) for income taxes		674		45			719		(46	)		15			(31	)
Net income		2,031		88			2,119		732			28			760
Basic net income per share	$	0.08	$	—		$	0.08	$	0.03		$	—		$	0.03
Diluted net income per share	$	0.07	$	0.01		$	0.08	$	0.03		$	—		$	0.03


	Three Months Ended
	March 31, 2016
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	20,712		$	90		$	20,802
Income (loss) from operations		11,874			(90	)		11,784
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(3,419	)		(90	)		(3,509	)
Provision (benefit) for income taxes		(720	)		(31	)		(751	)
Net income (loss)		(1,299	)		(59	)		(1,358	)
Basic net income (loss) per share	$	(0.05	)	$	—		$	(0.05	)
Diluted net income (loss) per share	$	(0.05	)	$	—		$	(0.05	)


	Year Ended December 31, 2015
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	51,745		$	37		$	51,782
Income (loss) from operations		26,797			(37	)		26,760
Write-off of unamortized debt issuance costs		18,673			500			19,173
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(22,950	)		(537	)		(23,487	)
Provision (benefit) for income taxes		(10,518	)		(1,180	)		(11,698	)
Net income (loss)		(7,431	)		643			(6,788	)
Basic net income (loss) per share	$	(0.35	)	$	0.03		$	(0.32	)
Diluted net income (loss) per share	$	(0.35	)	$	0.03		$	(0.32	)

The following tables present the effect of the revision on our Condensed Consolidated Statements of Comprehensive Income (Loss):


	Three Months Ended
	March 31, 2017
	As Previously Reported		Adjustment		As Revised
Net income	$	7,407	$	—	$	7,407

Foreign currency translation gain (loss)		4,706		298		5,004

Other comprehensive income (loss)		4,706		298		5,004

Comprehensive income (loss)	$	12,113	$	298	$	12,411


	Year Ended December 31, 2016
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	7,942		$	(643	)	$	7,299

Change in fair value of interest rate hedge		3,015			(1,105	)		1,910
Foreign currency translation gain (loss)		(8,984	)		(743	)		(9,727	)

Other comprehensive income (loss)		(5,969	)		(1,848	)		(7,817	)

Comprehensive income (loss)	$	1,973		$	(2,491	)	$	(518	)


	Three Months Ended								Nine Months Ended
	September 30, 2016								September 30, 2016
	As Previously Reported		Adjustment			As Revised			As Previously Reported		Adjustment			As Revised
Net income	$	4,147	$	308		$	4,455		$	4,879	$	336		$	5,215

Change in fair value of interest rate hedge		4,211		(1,967	)		2,244			3,130		(1,105	)		2,025
Foreign currency translation gain (loss)		382		(760	)		(378	)		4,176		(2,402	)		1,774

Other comprehensive income (loss)		4,593		(2,727	)		1,866			7,306		(3,507	)		3,799

Comprehensive income (loss)	$	8,740	$	(2,419	)	$	6,321		$	12,185	$	(3,171	)	$	9,014


	Three Months Ended									Six Months Ended
	June 30, 2016									June 30, 2016
	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Net income	$	2,031		$	88		$	2,119		$	732		$	28		$	760

Change in fair value of interest rate hedge		(79	)		495			416			(1,081	)		862			(219	)
Foreign currency translation gain (loss)		(2,925	)		(2,146	)		(5,071	)		3,794			(1,642	)		2,152

Other comprehensive income (loss)		(3,004	)		(1,651	)		(4,655	)		2,713			(780	)		1,933

Comprehensive income (loss)	$	(973	)	$	(1,563	)	$	(2,536	)	$	3,445		$	(752	)	$	2,693


	Three Months Ended
	March 31, 2016
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	(1,299	)	$	(59	)	$	(1,358	)

Change in fair value of interest rate hedge		(1,002	)		367			(635	)
Foreign currency translation gain (loss)		6,719			504			7,223

Other comprehensive income (loss)		5,717			871			6,588

Comprehensive income (loss)	$	4,418		$	812		$	5,230


	Year Ended December 31, 2015
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	(7,431	)	$	643		$	(6,788	)

Change in fair value of interest rate hedge		(2,584	)		947			(1,637	)
Foreign currency translation gain (loss)		(21,936	)		(3,075	)		(25,011	)

Other comprehensive income (loss)		(24,520	)		(2,128	)		(26,648	)

Comprehensive income (loss)	$	(31,951	)	$	(1,485	)	$	(33,436	)


	Year Ended December 31, 2014
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	8,217		$	—		$	8,217

Change in fair value of interest rate hedge		(431	)		158			(273	)
Foreign currency translation gain (loss)		(17,731	)		(868	)		(18,599	)

Other comprehensive income (loss)		(18,162	)		(710	)		(18,872	)

Comprehensive income (loss)	$	(9,945	)	$	(710	)	$	(10,655	)

The following tables present the effect of the revision on our Condensed Consolidated Balance Sheets:


	As of March 31, 2017
	As Previously Reported			Adjustment			As Revised
Investment in joint venture	$	42,387		$	(4,388	)	$	37,999
Total assets		1,391,043			(4,388	)		1,386,655
Accumulated other comprehensive income (loss)		(20,416	)		(4,388	)		(24,804	)
Total stockholders’ equity		327,879			(4,388	)		323,491
Total liabilities and stockholders’ equity		1,391,043			(4,388	)		1,386,655


	As of December 31, 2016
	As Previously Reported			Adjustment			As Revised
Investment in joint venture	$	40,694		$	(4,686	)	$	36,008
Total assets		1,360,386			(4,686	)		1,355,700
Accumulated other comprehensive income (loss)		(25,122	)		(4,686	)		(29,808	)
Total stockholders’ equity		315,199			(4,686	)		310,513
Total liabilities and stockholders’ equity		1,360,386			(4,686	)		1,355,700


	As of December 31, 2015
	As Previously Reported			Adjustment			As Revised
Current deferred tax assets	$	6,696		$	3,707		$	10,403
Total current assets		280,181			3,707			283,888
Property, plant and equipment, net		318,968			(329	)		318,639
Goodwill, net		449,898			5,072			454,970
Investment in joint venture		38,462			(2,212	)		36,250
Total assets		1,380,567			6,238			1,386,805
Accrued salaries, wages and benefits		21,125			(300	)		20,825
Income taxes payable		5,350			44			5,394
Total current liabilities		133,351			(256	)		133,095
Non-current deferred tax liabilities		117,459			8,176			125,635
Other liabilities		4,746			178			4,924
Total liabilities		1,066,686			8,098			1,074,784
Additional paid-in capital		277,582			335			277,917
Retained earnings		55,151			643			55,794
Accumulated other comprehensive income (loss)		(19,153	)		(2,839	)		(21,992	)
Total stockholders’ equity		313,881			(1,861	)		312,020
Total liabilities and stockholders’ equity		1,380,567			6,238			1,386,805

The following tables present the effect of the revision on our Condensed Consolidated Statements of Changes in Stockholders’ Equity:


	As Previously
	Reported			Adjustment			As Revised
As of and for the year ended December 31, 2014

Change in fair value of interest rate hedge	$	(431	)	$	158		$	(273	)
Foreign currency translation gain (loss)		(17,731	)		(868	)		(18,599	)
Accumulated other comprehensive income (loss)		5,367			(710	)		4,657
Total stockholders’ equity		173,699			(710	)		172,989

As of and for the year ended December 31, 2015

Net income (loss)		(7,431	)		643			(6,788	)
Change in fair value of interest rate hedge		(2,584	)		947			(1,637	)
Foreign currency translation gain (loss)		(21,936	)		(3,075	)		(25,011	)
Accumulated other comprehensive income (loss)		(19,153	)		(2,839	)		(21,992	)
Additional paid-in capital		277,582			335			277,917
Total stockholders’ equity		313,881			(1,861	)		312,020

As of and for the year ended December 31, 2016

Net income (loss)		7,942			(643	)		7,299
Change in fair value of interest rate hedge		3,015			(1,105	)		1,910
Foreign currency translation gain (loss)		(8,984	)		(743	)		(9,727	)
Accumulated other comprehensive income (loss)		(25,122	)		(4,686	)		(29,808	)
Total stockholders’ equity		315,199			(4,686	)		310,513

As of and for the three-months ended March 31, 2017

Foreign currency translation gain (loss)		4,706			298			5,004
Accumulated other comprehensive income (loss)		(20,416	)		(4,388	)		(24,804	)
Total stockholders’ equity		327,879			(4,388	)		323,491

Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2017
Subsequent Events [Abstract]
Subsequent Event	Note 15. Subsequent Event On July 10, 2017, we entered into a definitive agreement to sell our Precision Bearing Components Group for $375 million in cash, subject to certain adjustments, to TSUBAKI NAKASHIMA Co., Ltd. The transaction is expected to be completed in the second half of 2017 and is subject to regulatory and customary closing conditions. Net proceeds are expected to be approximately $270 million. Precision Bearing Components Group results will be reported as discontinued operations in our financial statements after the transaction closes.

Interim Financial Statements (Policies)	6 Months Ended
Interim Financial Statements (Policies)	Jun. 30, 2017
Quarterly Financial Information Disclosure [Abstract]
Prior Periods Financial Statement Revision	Prior Periods’ Financial Statement Revision In connection with the preparation of our Condensed Consolidated Financial Statements as of and for the three and six months ended June 30, 2017, we identified misstatements in our previously issued financial statements related to the foreign currency translation of our investment in a China joint venture. We acquired a 49% investment in the joint venture as part of our acquisition of Autocam Corporation (“Autocam”) on August 29, 2014. The investment in the joint venture was remeasured to fair value at the time of the acquisition and has been accounted for under the equity method of accounting. Following the completion of the Autocam acquisition, the investment in the joint venture was accounted for in U.S. dollars whereas it should have been accounted for in the joint venture’s functional currency of the Chinese Renminbi in accordance with Accounting Standards Codification (“ASC”) Topic 830, Foreign Currency Matters. As a result, we did not correctly account for our investment in the joint venture and the related currency translation adjustment impacts. We previously corrected as out of period adjustments certain immaterial misstatements and reflected them in the prior period financial statements, where applicable. These immaterial previously recorded out of period adjustments were primarily due to misstatements related to the initial recording of deferred tax assets and liabilities and corresponding adjustments to goodwill as part of the purchase price allocations of the Autocam and PEP acquisitions in 2014 and 2015, the accounting for the goodwill balances from those acquisitions for multi-currency reporting through Other Comprehensive Income, and to record the mark to market adjustments on our interest rate hedge net of tax through Other Comprehensive Income. We assessed the materiality of the misstatements on prior periods’ financial statements in accordance with SEC Staff Accounting Bulletin (“SAB”) Topic 1.M, Materiality, codified in ASC Topic 250, Presentation of Financial Statements, (“ASC 250”) and concluded that the misstatements were not material to any prior annual or interim periods. In accordance with ASC 250 (SAB Topic 1.N, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements), we have corrected these misstatements for all prior periods presented by revising the Condensed Consolidated Financial Statements and other consolidated financial information included herein. We have revised, and will revise for annual and interim periods in future filings, for certain amounts in the consolidated financial statements in order to correct these misstatements. See Note 14 in these Notes to Condensed Consolidated Financial Statements for additional information.
Recently Issued Accounting Standards	Issuance of New Accounting Standards Revenue Recognition. In May 2014, the FASB issued a new standard that provides a single, comprehensive revenue recognition model for all contracts with customers and supersedes most of the existing revenue recognition requirements. Under the new guidance, revenue is recognized when a customer obtains control of promised goods or services in an amount that reflects the consideration the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing and uncertainty of revenue and cash flows arising from contracts with customers. Factors that will affect pre-and post-implementation include, but are not limited to, identifying all the contracts that exist and whether incidental obligations or marketing incentives included in some of those contracts are performance obligations. Additionally, we are evaluating the transfer of control of certain consignment contracts which may impact the timing of revenue recognition under the new standard. The standard will be effective for us beginning January 1, 2018, with early adoption permitted. We believe the most appropriate approach for us to adopt the standard effective January 1, 2018, would be to utilize the full retrospective transition method to restate each prior reporting period presented. We continue to evaluate the adoption method as we progress through each phase of implementation. While our ability to adopt the standard using the full retrospective method depends on system readiness and completing our analysis of information necessary to restate prior period consolidated financial statements, we remain on schedule. We have completed a diagnostic accounting assessment, including an analysis of a representative sample of contracts, to identify areas that will be most significantly impacted by implementation of the new standard. We have also completed an initial training phase to educate contract managers of the technical aspects of the new standard. We are in the process of concluding on and documenting our assessments related to the standard as well as potential system and procedural changes. We are evaluating the impact the new standard will have on our financial condition, results of operations and cash flows. Our final evaluation of the impact of adopting the new standard is expected to be completed during 2017. Leases. In February 2016, the FASB issued ASU 2016-02, Leases. ASU 2016-02 creates Topic 842, Leases, in the ASC and supersedes ASC 840, Leases. Entities that hold numerous equipment and real estate leases, in particular those with numerous operating leases, will be most affected by the new guidance. The lease accounting standard is effective for public companies beginning January 1, 2019, with modified retrospective adoption required and early adoption permitted. The amendments in ASU 2016-02 are expected to impact balance sheets at many companies by adding lease-related assets and liabilities. This may affect compliance with contractual agreements and loan covenants. We have performed inquiries within segment locations and compiled information on operating and capital leases. We are currently evaluating the impacts of the lease accounting standard on our financial position, results of operations, and related disclosures. Statement of Cash Flows. In August 2016, the FASB issued ASU 2016-15, Classification of Certain Cash Receipts and Cash Payments. This standard provides clarification on how certain cash receipts and cash payments are presented and classified on the statement of cash flows. The standard is effective for us beginning January 1, 2018, and is required to be adopted using a retrospective approach if practicable, with early adoption permitted. We are in the process of assessing the effects of the standard on prior periods. Goodwill. In January 2017, the FASB issued ASU 2017-04, Intangibles – Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment, that eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of the current goodwill impairment test) to measure a goodwill impairment charge. Instead, entities will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on the current Step 1 test). The standard is effective for us beginning with impairment tests performed on or after January 1, 2020, with early adoption permitted. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures.

Inventories (Tables)

6 Months Ended

Jun. 30, 2017

Inventory Disclosure [Abstract]

Summary of Inventories

Inventories are comprised of the following amounts:


	June 30, 2017		December 31, 2016
Raw materials	$	52,916	$	49,205
Work in process		34,786		31,348
Finished goods		36,000		34,298

Inventories	$	123,702	$	114,851

Net Income (Loss) Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Summary of Net Income (Loss) Per Share


	Three Months Ended					Six Months Ended
	June 30,					June 30,
	2017			2016		2017			2016
Net income (loss)	$	(21,529	)	$	2,119	$	(14,122	)	$	760
Weighted average shares outstanding		27,468			27,024		27,358			26,923
Effect of dilutive stock options		—			163		—			127

Diluted shares outstanding		27,468			27,187		27,358			27,050

Basic net income (loss) per share	$	(0.78	)	$	0.08	$	(0.52	)	$	0.03

Diluted net income (loss) per share	$	(0.78	)	$	0.08	$	(0.52	)	$	0.03

Segment Information (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting [Abstract]

Segment Information


	Precision Bearing Components Group		Autocam Precision Components Group		Precision Engineered Products Group		Corporate and Consolidations			Total
Three Months ended June 30, 2017
Revenues from external customers	$	67,928	$	86,658	$	71,289	$	—		$	225,875
Income (loss) from operations	$	8,351	$	10,688	$	10,600	$	(9,046	)	$	20,593
Six Months ended June 30, 2017
Revenues from external customers	$	136,687	$	173,104	$	142,398	$	—		$	452,189
Income (loss) from operations	$	16,752	$	21,289	$	21,514	$	(16,804	)	$	42,751
Total assets	$	240,666	$	427,453	$	723,122	$	14,575		$	1,405,816
Three Months ended June 30, 2016
Revenues from external customers	$	65,157	$	82,991	$	66,124	$	—		$	214,272
Income (loss) from operations	$	6,474	$	7,770	$	10,782	$	(7,724	)	$	17,302
Six Months ended June 30, 2016
Revenues from external customers	$	129,902	$	166,981	$	129,615	$	—		$	426,498
Income (loss) from operations	$	12,800	$	14,297	$	16,203	$	(14,214	)	$	29,086
Total assets	$	226,943	$	418,664	$	740,475	$	8,651		$	1,394,733

Debt (Tables)

6 Months Ended

Jun. 30, 2017

Debt Disclosure [Abstract]

Summary of Long-Term and Short-Term Debt

Long-term and short-term debt at June 30, 2017, and December 31, 2016, consisted of the following amounts:


	June 30, 2017		December 31, 2016
$545.0 million Senior Secured Term Loan B (“Senior Secured Term Loan”) bearing interest at the greater of 0.75% or 1 month LIBOR (1.22% at June 30, 2017), plus an applicable margin of 4.25% at June 30, 2017, expiring October 19, 2022, net of debt issuance costs of $17.7 million at June 30, 2017, and $19.0 million at December 31, 2016	$	523,030	$	524,539
$300.0 million Incremental Term Loan (“Incremental Term Loan”) bearing interest at the greater of 0.75% or 1 month LIBOR (1.22% at June 30, 2017), plus an applicable margin of 3.75% at June 30, 2017, expiring April 3, 2021, net of debt issuance costs of $3.0 million at June 30, 2017		294,023		—
$143.0 million Senior Secured Revolver (“Senior Secured Revolver”) bearing interest at LIBOR (1.22% at June 30, 2017) plus an applicable margin of 3.5% at June 30, 2017, expiring October 19, 2020, net of debt issuance costs of $2.3 million at June 30, 2017, and $2.7 million at December 31, 2016		30,999		25,298
$250.0 million Senior Notes (“Senior Notes”) bearing interest at 10.25%, net of debt issuance costs of $4.9 million at December 31, 2016		—		245,077
French Safeguard Obligations (Autocam)		388		358
Brazilian lines of credit and equipment notes (Autocam)		379		573
Chinese line of credit (Autocam)		3,319		2,619

Total debt		852,138		798,464
Less current maturities of long-term debt		24,748		12,751

Long-term debt, excluding current maturities of long-term debt	$	827,390	$	785,713

Goodwill, Net (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill, net, for the six months ended June 30, 2017, are as follows:


	Precision Bearing Components Group		Autocam Precision Components Group		Precision Engineered Products Group		Total
Balance as of December 31, 2016	$	8,909	$	70,717	$	370,685	$	450,311
Currency impacts		174		474		1,323		1,971

Balance as of June 30, 2017	$	9,083	$	71,191	$	372,008	$	452,282

Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Intangible Assets, Net

The changes in the carrying amount of intangible assets, net, for the six months ended June 30, 2017, are as follows:


	Precision Bearing Components Group			Autocam Precision Components Group			Precision Engineered Products Group			Total
Balance as of December 31, 2016	$	1,718		$	42,928		$	211,335		$	255,981
Amortization		(104	)		(1,748	)		(9,933	)		(11,785	)
Currency impacts		70			(2	)		—			68

Balance as of June 30, 2017	$	1,684		$	41,178		$	201,402		$	244,264

Shared-Based Compensation (Tables)

6 Months Ended

Jun. 30, 2017

Schedule of Share-Based Compensation Expense

Share-based compensation expense during the three and six months ended June 30, 2017 and 2016, consisted of the following amounts:


	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2017		2016		2017		2016
Stock options	$	194	$	292	$	575	$	494
Restricted stock		395		710		855		1,358
Performance share units		477		482		788		633

Share-based compensation	$	1,066	$	1,484	$	2,218	$	2,485

Reconciliation of Option Activity

The following table provides a reconciliation of option activity for the six months ended June 30, 2017:


Options	Shares (000)			Weighted- Average Exercise Price (per share)		Weighted- Average Remaining Contractual Term (years)		Aggregate Intrinsic Value
Outstanding at January 1, 2017		897		$	12.22
Granted		126			24.20
Exercised		(220	)		11.81
Forfeited or expired		(6	)		7.72

Outstanding at June 30, 2017		797		$	14.22		6.6	$	10,538	(1)

Exercisable at June 30, 2017		555		$	12.17		5.5	$	8,490	(1)

⁽¹⁾	The intrinsic value is the amount by which the market price of our stock was greater than the exercise price of any individual option grant at June 30, 2017.

Stock Option [Member]

Weighted Average Assumptions Relevant to Determining the Fair Value at the Dates of Grant

The weighted average assumptions relevant to determining the fair value of the 2017 stock option grants are below:


	2017 Stock Option Awards
Term		6 years
Risk free interest rate		2.03	%
Dividend yield		1.16	%
Expected volatility		56.56	%
Expected forfeiture rate		3.00	%

Investment in Non-Consolidated Joint Venture (Tables)

6 Months Ended

Jun. 30, 2017

Equity Method Investments and Joint Ventures [Abstract]

Components of Joint Venture Investment

Below are the components of our JV investment balance and activity for the six months ended June 30, 2017:


Balance as of December 31, 2016	$	36,008
Our share of earnings		3,165
Accretion of basis difference from purchase accounting		(228	)
Foreign currency translation gain		908

Balance as of June 30, 2017	$	39,853

Summarized Balance Sheet Information for Joint Venture

The following table summarizes balance sheet information for the JV:


	June 30,		December 31,
	2017		2016
Current assets	$	40,712	$	31,295
Non-current assets		24,386		22,522

Total assets	$	65,098	$	53,817

Current liabilities	$	16,522	$	13,549
Non-current liabilities		6		—

Total liabilities	$	16,528	$	13,549

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2017

Fair Value Disclosures [Abstract]

Effect of Financial Assets and Liabilities Valued on Recurring Basis

The following table summarizes the assets and liabilities measured at fair value on a recurring basis for our interest rate swap derivative financial instrument:


				Fair Value Measurements at June 30, 2017
Description	June 30, 2017			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Derivative asset—current	$	5		$	—	$	5		$	—
Derivative asset—noncurrent		5			—		5			—
Derivative liability—current		(1,293	)		—		(1,293	)		—
Derivative liability—noncurrent		(464	)		—		(464	)		—

	$	(1,747	)	$	—	$	(1,747	)	$	—


				Fair Value Measurements at December 31, 2016
Description	December 31, 2016			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Derivative asset—current	$	69		$	—	$	69		$	—
Derivative asset—noncurrent		6			—		6			—
Derivative liability—current		(1,903	)		—		(1,903	)		—
Derivative liability—noncurrent		(1,028	)		—		(1,028	)		—

	$	(2,856	)	$	—	$	(2,856	)	$	—

Restructuring and Integration (Tables)

6 Months Ended

Jun. 30, 2017

Wheeling Plant [Member]

Summary of Restructuring and Integration Charges

The following table summarizes restructuring and integration activity related to actions incurred for the three and six months ended June 30, 2017 and 2016:


	Three Months Ended June 30,				Six Months Ended June 30,
	2017		2016		2017		2016
Severance and other employee costs	$	306	$	1,814	$	446	$	3,390
Site closure and other associated costs		—		2,011		—		2,938
Integration and other associated costs		—		222		—		257

Total	$	306	$	4,047	$	446	$	6,585


	Reserve Balance at December 31, 2016		Charges		Paid in 2017			Reserve Balance at June 30, 2017
Severance and other employee costs	$	3,019	$	446	$	(1,673	)	$	1,792
Site closure and other associated costs		1,626		—		(614	)		1,012
Integration and other associated costs		—		—		—			—

Total	$	4,645	$	446	$	(2,287	)	$	2,804

Prior Periods Financial Statement Revision (Tables)

6 Months Ended

Jun. 30, 2017

Accounting Changes and Error Corrections [Abstract]

Schedule of Revision on Condensed Consolidated Statements

The following tables present the effect of the revision on our Condensed Consolidated Statements of Operations:


	Year Ended December 31, 2016
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	80,266		$	(37	)	$	80,229
Income from operations		59,400			37			59,437
Write-off of unamortized debt issuance costs		3,089			(500	)		2,589
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(7,309	)		537			(6,772	)
Provision (benefit) for income taxes		(9,313	)		1,180			(8,133	)
Net income (loss)		7,942			(643	)		7,299
Basic net income (loss) per share	$	0.29		$	(0.02	)	$	0.27
Diluted net income (loss) per share	$	0.29		$	(0.02	)	$	0.27


	Three Months Ended									Nine Months Ended
	September 30, 2016									September 30, 2016
	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	18,347		$	—			18,347		$	60,651		$	(509	)	$	60,142
Income (loss) from operations		18,727			—			18,727			47,304			509			47,813
Interest expense		16,337			(466	)		15,871			48,924			—			48,924
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(3,703	)		466			(3,237	)		(5,760	)		509			(5,251	)
Provision (benefit) for income taxes		(6,423	)		158			(6,265	)		(6,469	)		173			(6,296	)
Net income (loss)		4,147			308			4,455			4,879			336			5,215
Basic net income (loss) per share	$	0.15		$	0.01		$	0.16		$	0.18		$	0.01		$	0.19
Diluted net income (loss) per share	$	0.15		$	0.01		$	0.16		$	0.18		$	0.01		$	0.19


	Three Months Ended							Six Months Ended
	June 30, 2016							June 30, 2016
	As Previously Reported		Adjustment			As Revised		As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	21,592	$	(599	)	$	20,993	$	42,304		$	(509	)	$	41,795
Income from operations		16,703		599			17,302		28,577			509			29,086
Interest expense		16,165		466			16,631		32,587			466			33,053
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		1,362		133			1,495		(2,057	)		43			(2,014	)
Provision (benefit) for income taxes		674		45			719		(46	)		15			(31	)
Net income		2,031		88			2,119		732			28			760
Basic net income per share	$	0.08	$	—		$	0.08	$	0.03		$	—		$	0.03
Diluted net income per share	$	0.07	$	0.01		$	0.08	$	0.03		$	—		$	0.03


	Three Months Ended
	March 31, 2016
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	20,712		$	90		$	20,802
Income (loss) from operations		11,874			(90	)		11,784
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(3,419	)		(90	)		(3,509	)
Provision (benefit) for income taxes		(720	)		(31	)		(751	)
Net income (loss)		(1,299	)		(59	)		(1,358	)
Basic net income (loss) per share	$	(0.05	)	$	—		$	(0.05	)
Diluted net income (loss) per share	$	(0.05	)	$	—		$	(0.05	)


	Year Ended December 31, 2015
	As Previously Reported			Adjustment			As Revised
Selling, general and administrative expense	$	51,745		$	37		$	51,782
Income (loss) from operations		26,797			(37	)		26,760
Write-off of unamortized debt issuance costs		18,673			500			19,173
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture		(22,950	)		(537	)		(23,487	)
Provision (benefit) for income taxes		(10,518	)		(1,180	)		(11,698	)
Net income (loss)		(7,431	)		643			(6,788	)
Basic net income (loss) per share	$	(0.35	)	$	0.03		$	(0.32	)
Diluted net income (loss) per share	$	(0.35	)	$	0.03		$	(0.32	)

The following tables present the effect of the revision on our Condensed Consolidated Statements of Comprehensive Income (Loss):


	Three Months Ended
	March 31, 2017
	As Previously Reported		Adjustment		As Revised
Net income	$	7,407	$	—	$	7,407

Foreign currency translation gain (loss)		4,706		298		5,004

Other comprehensive income (loss)		4,706		298		5,004

Comprehensive income (loss)	$	12,113	$	298	$	12,411


	Year Ended December 31, 2016
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	7,942		$	(643	)	$	7,299

Change in fair value of interest rate hedge		3,015			(1,105	)		1,910
Foreign currency translation gain (loss)		(8,984	)		(743	)		(9,727	)

Other comprehensive income (loss)		(5,969	)		(1,848	)		(7,817	)

Comprehensive income (loss)	$	1,973		$	(2,491	)	$	(518	)


	Three Months Ended								Nine Months Ended
	September 30, 2016								September 30, 2016
	As Previously Reported		Adjustment			As Revised			As Previously Reported		Adjustment			As Revised
Net income	$	4,147	$	308		$	4,455		$	4,879	$	336		$	5,215

Change in fair value of interest rate hedge		4,211		(1,967	)		2,244			3,130		(1,105	)		2,025
Foreign currency translation gain (loss)		382		(760	)		(378	)		4,176		(2,402	)		1,774

Other comprehensive income (loss)		4,593		(2,727	)		1,866			7,306		(3,507	)		3,799

Comprehensive income (loss)	$	8,740	$	(2,419	)	$	6,321		$	12,185	$	(3,171	)	$	9,014


	Three Months Ended									Six Months Ended
	June 30, 2016									June 30, 2016
	As Previously Reported			Adjustment			As Revised			As Previously Reported			Adjustment			As Revised
Net income	$	2,031		$	88		$	2,119		$	732		$	28		$	760

Change in fair value of interest rate hedge		(79	)		495			416			(1,081	)		862			(219	)
Foreign currency translation gain (loss)		(2,925	)		(2,146	)		(5,071	)		3,794			(1,642	)		2,152

Other comprehensive income (loss)		(3,004	)		(1,651	)		(4,655	)		2,713			(780	)		1,933

Comprehensive income (loss)	$	(973	)	$	(1,563	)	$	(2,536	)	$	3,445		$	(752	)	$	2,693


	Three Months Ended
	March 31, 2016
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	(1,299	)	$	(59	)	$	(1,358	)

Change in fair value of interest rate hedge		(1,002	)		367			(635	)
Foreign currency translation gain (loss)		6,719			504			7,223

Other comprehensive income (loss)		5,717			871			6,588

Comprehensive income (loss)	$	4,418		$	812		$	5,230


	Year Ended December 31, 2015
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	(7,431	)	$	643		$	(6,788	)

Change in fair value of interest rate hedge		(2,584	)		947			(1,637	)
Foreign currency translation gain (loss)		(21,936	)		(3,075	)		(25,011	)

Other comprehensive income (loss)		(24,520	)		(2,128	)		(26,648	)

Comprehensive income (loss)	$	(31,951	)	$	(1,485	)	$	(33,436	)


	Year Ended December 31, 2014
	As Previously Reported			Adjustment			As Revised
Net income (loss)	$	8,217		$	—		$	8,217

Change in fair value of interest rate hedge		(431	)		158			(273	)
Foreign currency translation gain (loss)		(17,731	)		(868	)		(18,599	)

Other comprehensive income (loss)		(18,162	)		(710	)		(18,872	)

Comprehensive income (loss)	$	(9,945	)	$	(710	)	$	(10,655	)

The following tables present the effect of the revision on our Condensed Consolidated Balance Sheets:


	As of March 31, 2017
	As Previously Reported			Adjustment			As Revised
Investment in joint venture	$	42,387		$	(4,388	)	$	37,999
Total assets		1,391,043			(4,388	)		1,386,655
Accumulated other comprehensive income (loss)		(20,416	)		(4,388	)		(24,804	)
Total stockholders’ equity		327,879			(4,388	)		323,491
Total liabilities and stockholders’ equity		1,391,043			(4,388	)		1,386,655


	As of December 31, 2016
	As Previously Reported			Adjustment			As Revised
Investment in joint venture	$	40,694		$	(4,686	)	$	36,008
Total assets		1,360,386			(4,686	)		1,355,700
Accumulated other comprehensive income (loss)		(25,122	)		(4,686	)		(29,808	)
Total stockholders’ equity		315,199			(4,686	)		310,513
Total liabilities and stockholders’ equity		1,360,386			(4,686	)		1,355,700


	As of December 31, 2015
	As Previously Reported			Adjustment			As Revised
Current deferred tax assets	$	6,696		$	3,707		$	10,403
Total current assets		280,181			3,707			283,888
Property, plant and equipment, net		318,968			(329	)		318,639
Goodwill, net		449,898			5,072			454,970
Investment in joint venture		38,462			(2,212	)		36,250
Total assets		1,380,567			6,238			1,386,805
Accrued salaries, wages and benefits		21,125			(300	)		20,825
Income taxes payable		5,350			44			5,394
Total current liabilities		133,351			(256	)		133,095
Non-current deferred tax liabilities		117,459			8,176			125,635
Other liabilities		4,746			178			4,924
Total liabilities		1,066,686			8,098			1,074,784
Additional paid-in capital		277,582			335			277,917
Retained earnings		55,151			643			55,794
Accumulated other comprehensive income (loss)		(19,153	)		(2,839	)		(21,992	)
Total stockholders’ equity		313,881			(1,861	)		312,020
Total liabilities and stockholders’ equity		1,380,567			6,238			1,386,805

The following tables present the effect of the revision on our Condensed Consolidated Statements of Changes in Stockholders’ Equity:


	As Previously
	Reported			Adjustment			As Revised
As of and for the year ended December 31, 2014

Change in fair value of interest rate hedge	$	(431	)	$	158		$	(273	)
Foreign currency translation gain (loss)		(17,731	)		(868	)		(18,599	)
Accumulated other comprehensive income (loss)		5,367			(710	)		4,657
Total stockholders’ equity		173,699			(710	)		172,989

As of and for the year ended December 31, 2015

Net income (loss)		(7,431	)		643			(6,788	)
Change in fair value of interest rate hedge		(2,584	)		947			(1,637	)
Foreign currency translation gain (loss)		(21,936	)		(3,075	)		(25,011	)
Accumulated other comprehensive income (loss)		(19,153	)		(2,839	)		(21,992	)
Additional paid-in capital		277,582			335			277,917
Total stockholders’ equity		313,881			(1,861	)		312,020

As of and for the year ended December 31, 2016

Net income (loss)		7,942			(643	)		7,299
Change in fair value of interest rate hedge		3,015			(1,105	)		1,910
Foreign currency translation gain (loss)		(8,984	)		(743	)		(9,727	)
Accumulated other comprehensive income (loss)		(25,122	)		(4,686	)		(29,808	)
Total stockholders’ equity		315,199			(4,686	)		310,513

As of and for the three-months ended March 31, 2017

Foreign currency translation gain (loss)		4,706			298			5,004
Accumulated other comprehensive income (loss)		(20,416	)		(4,388	)		(24,804	)
Total stockholders’ equity		327,879			(4,388	)		323,491

Interim Financial Statements - Additional Information (Detail) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($) Segment ManufacturingPlants
Interim Reporting [Line Items]
Number of manufacturing plants \| ManufacturingPlants	40
Number of reportable segments \| Segment	3
Wuxi Weifu Autocam Precision Machinery Company, Ltd. [Member]
Interim Reporting [Line Items]
Investment in joint venture	49.00%
ASU 2016-09 [Member]
Interim Reporting [Line Items]
Reclassification of tax benefits from deferred taxes to retained earnings \| $	$ 0.7

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Raw materials	$ 52,916	$ 49,205
Work in process	34,786	31,348
Finished goods	36,000	34,298
Inventories	$ 123,702	$ 114,851

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventory on consignment at customers' location	$ 6.2	$ 5.0

Net Income (Loss) Per Share - Summary of Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income (loss)	$ (21,529)	$ 7,407	$ 4,455	$ 2,119	$ (1,358)	$ (14,122)	$ 760	$ 5,215	$ 7,299	$ (6,788)	$ 8,217
Weighted average shares outstanding	27,468			27,024		27,358	26,923
Effect of dilutive stock options				163			127
Diluted shares outstanding	27,468			27,187		27,358	27,050
Basic net income (loss) per share	$ (0.78)		$ 0.16	$ 0.08	$ (0.05)	$ (0.52)	$ 0.03	$ 0.19	$ 0.27	$ (0.32)
Diluted net income (loss) per share	$ (0.78)		$ 0.16	$ 0.08	$ (0.05)	$ (0.52)	$ 0.03	$ 0.19	$ 0.27	$ (0.32)

Net Income (Loss) Per Share - Additional Information (Detail) - shares shares in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016
Stock Option [Member]
Net Income Per Share [Line Items]
Anti-dilutive securities excluded from the calculation of diluted earnings per share	0.9	0.9

Segment Information - Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2017
Segment Reporting Information [Line Items]
Revenues from external customers	$ 225,875		$ 214,272		$ 452,189	$ 426,498
Income (loss) from operations	20,593	$ 18,727	17,302	$ 11,784	42,751	29,086	$ 47,813	$ 59,437	$ 26,760
Total assets	1,405,816		1,394,733		1,405,816	1,394,733		$ 1,355,700	$ 1,386,805	$ 1,386,655
Precision Bearing Components Group [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	67,928		65,157		136,687	129,902
Income (loss) from operations	8,351		6,474		16,752	12,800
Total assets	240,666		226,943		240,666	226,943
Autocam Precision Components Group [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	86,658		82,991		173,104	166,981
Income (loss) from operations	10,688		7,770		21,289	14,297
Total assets	427,453		418,664		427,453	418,664
Precision Engineered Products Group [Member] \| Operating Segments [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	71,289		66,124		142,398	129,615
Income (loss) from operations	10,600		10,782		21,514	16,203
Total assets	723,122		740,475		723,122	740,475
Corporate and Consolidations [Member]
Segment Reporting Information [Line Items]
Income (loss) from operations	(9,046)		(7,724)		(16,804)	(14,214)
Total assets	$ 14,575		$ 8,651		$ 14,575	$ 8,651

Debt - Summary of Long-Term and Short-Term Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Total debt	$ 852,138	$ 798,464
Less current maturities of long-term debt	24,748	12,751
Long-term debt, excluding current maturities of long-term debt	827,390	785,713
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Senior debt		245,077
French Safeguard [Member]
Debt Instrument [Line Items]
French Safeguard Obligations	388	358
Brazilian [Member]
Debt Instrument [Line Items]
Line of credit	379	573
Chinese [Member]
Debt Instrument [Line Items]
Line of credit	3,319	2,619
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Senior debt	523,030	524,539
Incremental Term Loan [Member]
Debt Instrument [Line Items]
Senior debt	294,023
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Line of credit	$ 30,999	$ 25,298

Debt - Summary of Long-Term and Short-Term Debt (Parenthetical) (Detail) - USD ($)		6 Months Ended
	Apr. 03, 2017	Jun. 30, 2017	Dec. 31, 2016
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings		$ 250,000,000
Interest rate		10.25%
Debt issuance costs			$ 4,900,000
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings		$ 545,000,000
Interest rate		1.22%
Applicable margin		4.25%
Debt issuance costs		$ 17,700,000	19,000,000
LIBOR Period		1 month
Debt maturity date		Oct. 19, 2022
Senior Secured Term Loan B [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate		0.75%
Incremental Term Loan [Member]
Debt Instrument [Line Items]
Borrowings	$ 300,000,000	$ 300,000,000
Interest rate		1.22%
Interest rate	0.75%
Applicable margin	3.75%	3.75%
Debt issuance costs		$ 3,000,000
LIBOR Period	1 month	1 month
Debt maturity date		Apr. 03, 2021
Incremental Term Loan [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Interest rate		0.75%
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Debt issuance costs		$ 2,300,000	$ 2,700,000
Borrowings		$ 143,000,000
Debt maturity date		Oct. 19, 2020
Senior Secured Revolving Facility [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate		1.22%
Applicable margin		3.50%

Debt - Additional Information (Detail) - USD ($)		3 Months Ended	6 Months Ended	12 Months Ended
Debt - Additional Information (Detail) - USD ($)	Apr. 03, 2017	Jun. 30, 2017	Jun. 30, 2017	Dec. 31, 2016	Dec. 31, 2015
Line of Credit Facility [Line Items]
Loss on debt extinguishment		$ (39,639,000)	$ (39,639,000)
Write-off of unamortized debt issuance costs			8,054,000	$ 2,589,000	$ 19,173,000
Incremental Term Loan [Member]
Line of Credit Facility [Line Items]
Debt instrument face amount	$ 300,000,000	$ 300,000,000	$ 300,000,000
Interest rate	0.75%
LIBOR Period	1 month		1 month
Basis spread on variable rate	3.75%		3.75%
Debt maturity date	Apr. 03, 2021
Debt instrument periodic payment	$ 3,000,000
Debt instrument frequency of periodic payment			Quarterly
Debt instrument, premium percentage		1.00%	1.00%
Senior Secured Revolving Facility [Member]
Line of Credit Facility [Line Items]
Loss on debt extinguishment	2,500,000
Write-off of unamortized debt issuance costs	800,000
Borrowings		$ 143,000,000	$ 143,000,000
Senior secured revolving credit facility current borrowing capacity	100,000,000
Debt issuance costs	6,500,000
Direct reduction to carrying amount of debt	4,000,000
Senior Notes [Member]
Line of Credit Facility [Line Items]
Outstanding amount of notes redeemed	281,600,000
Loss on debt extinguishment	36,300,000
Cash paid for call premium	31,600,000
Write-off of unamortized debt issuance costs	$ 4,700,000
French Safeguard [Member]
Line of Credit Facility [Line Items]
Interest rate		0.00%	0.00%
French Safeguard Obligations		$ 388,000	$ 388,000	$ 358,000
Current maturities of French Safeguard obligations		100,000	100,000
Noncurrent maturities of French Safeguard obligations		$ 300,000	$ 300,000
Chinese [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate			4.60%
Minimum [Member] \| Incremental Term Loan [Member]
Line of Credit Facility [Line Items]
Interest rate		0.75%	0.75%
Minimum [Member] \| French Safeguard [Member]
Line of Credit Facility [Line Items]
Creditor's claim period			10 years
Minimum [Member] \| Brazilian [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate			2.50%
Maximum [Member] \| Brazilian [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate			6.00%

Goodwill, Net - Changes in Carrying Amount of Goodwill (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Goodwill [Line Items]
Beginning Balance	$ 450,311
Currency impacts	1,971
Ending Balance	452,282
Precision Bearing Components Group [Member]
Goodwill [Line Items]
Beginning Balance	8,909
Currency impacts	174
Ending Balance	9,083
Autocam Precision Components Group [Member]
Goodwill [Line Items]
Beginning Balance	70,717
Currency impacts	474
Ending Balance	71,191
Precision Engineered Products Group [Member]
Goodwill [Line Items]
Beginning Balance	370,685
Currency impacts	1,323
Ending Balance	$ 372,008

Goodwill, Net - Additional Information (Detail)	6 Months Ended
Goodwill, Net - Additional Information (Detail)	Jun. 30, 2017 USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of goodwill	$ 0

Intangible Assets, Net - Summary of Changes in Carrying Amount of Intangible Assets, Net (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($)
Finite-Lived Intangible Assets [Line Items]
Beginning balance	$ 255,981
Amortization	(11,785)
Currency impacts	68
Ending balance	244,264
Precision Bearing Components Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	1,718
Amortization	(104)
Currency impacts	70
Ending balance	1,684
Autocam Precision Components Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	42,928
Amortization	(1,748)
Currency impacts	(2)
Ending balance	41,178
Precision Engineered Products Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	211,335
Amortization	(9,933)
Ending balance	$ 201,402

Shared-Based Compensation - Schedule of Share-Based Compensation Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share units	$ 1,066	$ 1,484	$ 2,218	$ 2,485
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share units	194	292	575	494
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock	395	710	855	1,358
Performance Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share units	$ 477	$ 482	$ 788	$ 633

Shared-Based Compensation - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2017 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted \| shares	126,000
Weighted average grant date fair value of the options granted	$ 11.84
Weighted-Average Exercise Price, Granted	$ 24.20
Model used to derive fair value	Monte Carlo valuation model
Performance Condition [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Exercise Price, Granted	$ 24.20
Monte Carlo Valuation Model [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-Average Exercise Price, Granted	$ 29.84
Performance Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense period	3 years
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted \| shares	85,393
Fair value assumptions, exercise price	$ 24.29
Non-executive Directors [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock issue	1 year
Officers and Key Employees [Member] \| Performance Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock units granted \| shares	98,618
Officers and Key Employees [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock issue	3 years

Shared-Based Compensation - Weighted Average Assumptions Relevant to Determining the Fair Value at the Dates of Grant (Detail) - Stock Option [Member]	6 Months Ended
	Jun. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term	6 years
Risk free interest rate	2.03%
Dividend yield	1.16%
Expected volatility	56.56%
Expected forfeiture rate	3.00%

Shared-Based Compensation - Reconciliation of Option Activity (Detail) $ / shares in Units, shares in Thousands, $ in Thousands	6 Months Ended
	Jun. 30, 2017 USD ($) $ / shares shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of options, Outstanding, Beginning Balance \| shares	897
Number of Options, Granted \| shares	126
Number of Options, Exercised \| shares	(220)
Number of Options, Forfeited or expired \| shares	(6)
Number of Options, Outstanding, Ending Balance \| shares	797
Number of Options, Options Exercisable \| shares	555
Weighted-Average Exercise Price, Outstanding, Beginning Balance \| $ / shares	$ 12.22
Weighted-Average Exercise Price, Granted \| $ / shares	24.20
Weighted-Average Exercise Price, Exercised \| $ / shares	11.81
Weighted-Average Exercise Price, Forfeited or expired \| $ / shares	7.72
Weighted-Average Exercise Price, Outstanding, Ending Balance \| $ / shares	14.22
Weighted-Average Exercise Price, Options exercisable \| $ / shares	$ 12.17
Weighted-Average Remaining Contractual Term, Outstanding	6 years 7 months 6 days
Weighted- Average Remaining Contractual Term, Options exercisable	5 years 6 months
Aggregate Intrinsic Value, Outstanding \| $	$ 10,538
Aggregate Intrinsic Value, Options exercisable \| $	$ 8,490

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Income Tax Disclosure [Abstract]
Effective tax rate on non deductible expense	29.00%	48.00%	29.00%	2.00%
U.S. federal statutory rate	34.00%	34.00%	34.00%	34.00%
Unrecognized tax benefits	$ 0.6		$ 0.6
Reduction in income tax expense			$ 0.5

Commitments and Contingencies - Additional Information (Detail)	Jun. 30, 2017 USD ($)
Contingencies And Commitments [Line Items]
Amount accrued for estimation of loss	$ 0
Minimum [Member]
Contingencies And Commitments [Line Items]
Possible loss estimated	0
Maximum [Member]
Contingencies And Commitments [Line Items]
Possible loss estimated	$ 6,000,000

Investment in Non-Consolidated Joint Venture - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of Equity Method Investments [Line Items]
Net sales	$ 225,875	$ 214,272	$ 452,189	$ 426,498
Autocam [Member] \| Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Net sales	100		100
Amount due from joint venture	$ 100		$ 100
Wuxi Weifu Autocam Precision Machinery Company, Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Investment in joint venture	49.00%		49.00%

Investment in Non-Consolidated Joint Venture - Components of Joint Venture Investment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Schedule of Equity Method Investments [Line Items]
Beginning Balance	$ 37,999		$ 36,008	$ 36,250
Our share of earnings	1,244	$ 1,343	2,937	$ 2,743
Ending Balance	39,853		39,853
Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance			36,008
Our share of earnings			3,165
Accretion of basis difference from purchase accounting			(228)
Foreign currency translation gain			908
Ending Balance	$ 39,853		$ 39,853

Investment in Non-Consolidated Joint Venture - Summarized Balance Sheet Information for Joint Venture (Detail) - Joint Venture [Member] - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Schedule of Equity Method Investments [Line Items]
Current assets	$ 40,712	$ 31,295
Non-current assets	24,386	22,522
Total assets	65,098	53,817
Current liabilities	16,522	13,549
Non-current liabilities	6
Total liabilities	$ 16,528	$ 13,549

Fair Value Measurements - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Derivatives, Fair Value [Line Items]
Fair value of fixed-rate debt	$ 0		$ 0
Derivative in Net liability position	1,700,000		1,700,000
Gain or loss related to interest rate swaps		$ 500,000		$ 900,000
Interest rate swap settlements in derivative losses	500,000		1,000,000
Amount to be reclassified from accumulated and other comprehensive income in next twelve months	$ 0		0
Cash payments related to the interest rate swap			1,300,000
Accumulated Other Comprehensive Income (loss) [Member]
Derivatives, Fair Value [Line Items]
Gain or loss related to interest rate swaps			$ 0

Fair Value Measurements - Financial Assets and Liabilities Valued on Recurring Basis (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Derivative asset-current	$ 5	$ 69
Derivative asset-noncurrent	5	6
Derivative liability-current	(1,293)	(1,903)
Derivative liability-noncurrent	(464)	(1,028)
Derivative assets and liabilities, Total	(1,747)	(2,856)
Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Fair Value [Line Items]
Derivative asset-current	5	69
Derivative asset-noncurrent	5	6
Derivative liability-current	(1,293)	(1,903)
Derivative liability-noncurrent	(464)	(1,028)
Derivative assets and liabilities, Total	$ (1,747)	$ (2,856)

Restructuring and Integration - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	$ 300,000	$ 4,000,000	$ 400,000	$ 6,600,000
Precision Engineered Products Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	0.0	200,000	0.0	600,000
Precision Bearing Components Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	300,000	1,700,000	400,000	2,400,000
Wheeling Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost			446,000
Wheeling Plant [Member] \| Autocam Precision Components Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	$ 6,000	$ 2,100,000	$ 16,000	$ 3,600,000

Restructuring and Integration - Summary of Restructuring and Integration Charges (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Restructuring Cost and Reserve [Line Items]
Total	$ 306	$ 4,047	$ 446	$ 6,585
Charges	300	4,000	400	6,600
Wheeling Plant [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	306	1,814	446	3,390
Site closure and other associated costs		2,011		2,938
Integration and other associated costs		222		257
Total	306	$ 4,047	446	$ 6,585
Reserve beginning balance			4,645
Charges			446
Paid in			(2,287)
Reserve ending balance	2,804		2,804
Wheeling Plant [Member] \| Severance and Other Employee Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reserve beginning balance			3,019
Charges			446
Paid in			(1,673)
Reserve ending balance	1,792		1,792
Wheeling Plant [Member] \| Site Closure and Other Associated Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reserve beginning balance			1,626
Paid in			(614)
Reserve ending balance	$ 1,012		$ 1,012

Prior Periods Financial Statement Revision - Schedule of Revision on Condensed Consolidated Statements of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Changes And Error Corrections [Line Items]
Selling, general and administrative expense	$ 23,036		$ 18,347	$ 20,993	$ 20,802	$ 44,530	$ 41,795	$ 60,142	$ 80,229	$ 51,782
Income (loss) from operations	20,593		18,727	17,302	11,784	42,751	29,086	47,813	59,437	26,760
Write-off of unamortized debt issuance costs						8,054			2,589	19,173
Interest expense	12,409		15,871	16,631		27,365	33,053	48,924
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture	(32,201)		(3,237)	1,495	(3,509)	(24,187)	(2,014)	(5,251)	(6,772)	(23,487)
Provision (benefit) for income taxes	(9,428)		(6,265)	719	(751)	(7,128)	(31)	(6,296)	(8,133)	(11,698)
Net income (loss)	$ (21,529)	$ 7,407	$ 4,455	$ 2,119	$ (1,358)	$ (14,122)	$ 760	$ 5,215	$ 7,299	$ (6,788)	$ 8,217
Basic net income (loss) per share	$ (0.78)		$ 0.16	$ 0.08	$ (0.05)	$ (0.52)	$ 0.03	$ 0.19	$ 0.27	$ (0.32)
Diluted net income (loss) per share	$ (0.78)		$ 0.16	$ 0.08	$ (0.05)	$ (0.52)	$ 0.03	$ 0.19	$ 0.27	$ (0.32)
As Previously Reported [Member]
Accounting Changes And Error Corrections [Line Items]
Selling, general and administrative expense			$ 18,347	$ 21,592	$ 20,712		$ 42,304	$ 60,651	$ 80,266	$ 51,745
Income (loss) from operations			18,727	16,703	11,874		28,577	47,304	59,400	26,797
Write-off of unamortized debt issuance costs									3,089	18,673
Interest expense			16,337	16,165			32,587	48,924
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture			(3,703)	1,362	(3,419)		(2,057)	(5,760)	(7,309)	(22,950)
Provision (benefit) for income taxes			(6,423)	674	(720)		(46)	(6,469)	(9,313)	(10,518)
Net income (loss)		$ 7,407	$ 4,147	$ 2,031	$ (1,299)		$ 732	$ 4,879	$ 7,942	$ (7,431)	$ 8,217
Basic net income (loss) per share			$ 0.15	$ 0.08	$ (0.05)		$ 0.03	$ 0.18	$ 0.29	$ (0.35)
Diluted net income (loss) per share			$ 0.15	$ 0.07	$ (0.05)		$ 0.03	$ 0.18	$ 0.29	$ (0.35)
Adjustment [Member]
Accounting Changes And Error Corrections [Line Items]
Selling, general and administrative expense				$ (599)	$ 90		$ (509)	$ (509)	$ (37)	$ 37
Income (loss) from operations				599	(90)		509	509	37	(37)
Write-off of unamortized debt issuance costs									(500)	500
Interest expense			$ (466)	466			466
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture			466	133	(90)		43	509	537	(537)
Provision (benefit) for income taxes			158	45	(31)		15	173	1,180	(1,180)
Net income (loss)			$ 308	$ 88	$ (59)		$ 28	$ 336	$ (643)	$ 643
Basic net income (loss) per share			$ 0.01					$ 0.01	$ (0.02)	$ 0.03
Diluted net income (loss) per share			$ 0.01	$ 0.01				$ 0.01	$ (0.02)	$ 0.03

Prior Periods Financial Statement Revision - Schedule of Revision on Condensed Consolidated Statements of Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Changes And Error Corrections [Line Items]
Net income (loss)	$ (21,529)	$ 7,407	$ 4,455	$ 2,119	$ (1,358)	$ (14,122)	$ 760	$ 5,215	$ 7,299	$ (6,788)	$ 8,217
Change in fair value of interest rate hedge			2,244	416	(635)		(219)	2,025	1,910	(1,637)	(273)
Foreign currency translation gain (loss)	9,240	5,004	(378)	(5,071)	7,223	14,244	2,152	1,774	(9,727)	(25,011)	(18,599)
Other comprehensive income (loss)	9,240	5,004	1,866	(4,655)	6,588	14,244	1,933	3,799	(7,817)	(26,648)	(18,872)
Comprehensive income (loss)	$ (12,289)	12,411	6,321	(2,536)	5,230	$ 122	2,693	9,014	(518)	(33,436)	(10,655)
As Previously Reported [Member]
Accounting Changes And Error Corrections [Line Items]
Net income (loss)		7,407	4,147	2,031	(1,299)		732	4,879	7,942	(7,431)	8,217
Change in fair value of interest rate hedge			4,211	(79)	(1,002)		(1,081)	3,130	3,015	(2,584)	(431)
Foreign currency translation gain (loss)		4,706	382	(2,925)	6,719		3,794	4,176	(8,984)	(21,936)	(17,731)
Other comprehensive income (loss)		4,706	4,593	(3,004)	5,717		2,713	7,306	(5,969)	(24,520)	(18,162)
Comprehensive income (loss)		12,113	8,740	(973)	4,418		3,445	12,185	1,973	(31,951)	(9,945)
Adjustment [Member]
Accounting Changes And Error Corrections [Line Items]
Net income (loss)			308	88	(59)		28	336	(643)	643
Change in fair value of interest rate hedge			(1,967)	495	367		862	(1,105)	(1,105)	947	158
Foreign currency translation gain (loss)		298	(760)	(2,146)	504		(1,642)	(2,402)	(743)	(3,075)	(868)
Other comprehensive income (loss)		298	(2,727)	(1,651)	871		(780)	(3,507)	(1,848)	(2,128)	(710)
Comprehensive income (loss)		$ 298	$ (2,419)	$ (1,563)	$ 812		$ (752)	$ (3,171)	$ (2,491)	$ (1,485)	$ (710)

Prior Periods Financial Statement Revision - Schedule of Revision on Condensed Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Changes And Error Corrections [Line Items]
Current deferred tax assets					$ 10,403
Total current assets	$ 327,628		$ 280,555		283,888
Property, plant and equipment, net	333,160		322,953		318,639
Goodwill, net	452,282		450,311		454,970
Investment in joint venture	39,853	$ 37,999	36,008		36,250
Total assets	1,405,816	1,386,655	1,355,700	$ 1,394,733	1,386,805
Accrued salaries, wages and benefits	23,941		24,996		20,825
Income taxes payable			2,125		5,394
Total current liabilities	147,063		138,616		133,095
Non-current deferred tax liabilities	99,333		99,591		125,635
Other liabilities	9,647		9,651		4,924
Total liabilities	1,094,003		1,045,187		1,074,784
Additional paid-in capital	288,903		284,508		277,917
Retained earnings	38,167		55,509		55,794
Accumulated other comprehensive income (loss)	(15,564)	(24,804)	(29,808)		(21,992)	$ 4,657
Total stockholders' equity	311,813	323,491	310,513		312,020	172,989
Total liabilities and stockholders' equity	$ 1,405,816	1,386,655	1,355,700		1,386,805
As Previously Reported [Member]
Accounting Changes And Error Corrections [Line Items]
Current deferred tax assets					6,696
Total current assets					280,181
Property, plant and equipment, net					318,968
Goodwill, net					449,898
Investment in joint venture		42,387	40,694		38,462
Total assets		1,391,043	1,360,386		1,380,567
Accrued salaries, wages and benefits					21,125
Income taxes payable					5,350
Total current liabilities					133,351
Non-current deferred tax liabilities					117,459
Other liabilities					4,746
Total liabilities					1,066,686
Additional paid-in capital					277,582
Retained earnings					55,151
Accumulated other comprehensive income (loss)		(20,416)	(25,122)		(19,153)	5,367
Total stockholders' equity		327,879	315,199		313,881	173,699
Total liabilities and stockholders' equity		1,391,043	1,360,386		1,380,567
Adjustment [Member]
Accounting Changes And Error Corrections [Line Items]
Current deferred tax assets					3,707
Total current assets					3,707
Property, plant and equipment, net					(329)
Goodwill, net					5,072
Investment in joint venture		(4,388)	(4,686)		(2,212)
Total assets		(4,388)	(4,686)		6,238
Accrued salaries, wages and benefits					(300)
Income taxes payable					44
Total current liabilities					(256)
Non-current deferred tax liabilities					8,176
Other liabilities					178
Total liabilities					8,098
Additional paid-in capital					335
Retained earnings					643
Accumulated other comprehensive income (loss)		(4,388)	(4,686)		(2,839)	(710)
Total stockholders' equity		(4,388)	(4,686)		(1,861)	$ (710)
Total liabilities and stockholders' equity		$ (4,388)	$ (4,686)		$ 6,238

Prior Periods Financial Statement Revision - Schedule of Revision on Changes in Stockholders' Equity (Detail) - USD ($) $ in Thousands	3 Months Ended					6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Changes And Error Corrections [Line Items]
Net income (loss)	$ (21,529)	$ 7,407	$ 4,455	$ 2,119	$ (1,358)	$ (14,122)	$ 760	$ 5,215	$ 7,299	$ (6,788)	$ 8,217
Change in fair value of interest rate hedge			2,244	416	(635)		(219)	2,025	1,910	(1,637)	(273)
Foreign currency translation gain (loss)	9,240	5,004	(378)	(5,071)	7,223	14,244	2,152	1,774	(9,727)	(25,011)	(18,599)
Accumulated other comprehensive income (loss)	(15,564)	(24,804)				(15,564)			(29,808)	(21,992)	4,657
Additional paid-in capital	288,903					288,903			284,508	277,917
Total stockholders' equity	$ 311,813	323,491				$ 311,813			310,513	312,020	172,989
As Previously Reported [Member]
Accounting Changes And Error Corrections [Line Items]
Net income (loss)		7,407	4,147	2,031	(1,299)		732	4,879	7,942	(7,431)	8,217
Change in fair value of interest rate hedge			4,211	(79)	(1,002)		(1,081)	3,130	3,015	(2,584)	(431)
Foreign currency translation gain (loss)		4,706	382	(2,925)	6,719		3,794	4,176	(8,984)	(21,936)	(17,731)
Accumulated other comprehensive income (loss)		(20,416)							(25,122)	(19,153)	5,367
Additional paid-in capital										277,582
Total stockholders' equity		327,879							315,199	313,881	173,699
Adjustment [Member]
Accounting Changes And Error Corrections [Line Items]
Net income (loss)			308	88	(59)		28	336	(643)	643
Change in fair value of interest rate hedge			(1,967)	495	367		862	(1,105)	(1,105)	947	158
Foreign currency translation gain (loss)		298	$ (760)	$ (2,146)	$ 504		$ (1,642)	$ (2,402)	(743)	(3,075)	(868)
Accumulated other comprehensive income (loss)		(4,388)							(4,686)	(2,839)	(710)
Additional paid-in capital										335
Total stockholders' equity		$ (4,388)							$ (4,686)	$ (1,861)	$ (710)

Subsequent Event - Additional Information (Detail) - Material Definitive Agreement [Member] - Precision Bearing Components Group [Member] - Subsequent Event [Member] $ in Millions	Jul. 10, 2017 USD ($)
Subsequent Event [Line Items]
Cash proceeds from sale of segment	$ 375
Net proceeds from sale of segment	$ 270