NN (NNBR) 10-K 16 Mar 17 2016 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2016	Mar. 01, 2017	Jun. 30, 2016
Document And Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2016
Document Fiscal Year Focus	2,016
Document Fiscal Period Focus	FY
Trading Symbol	NNBR
Entity Registrant Name	NN INC
Entity Central Index Key	918,541
Current Fiscal Year End Date	--12-31
Entity Well-known Seasoned Issuer	No
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		27,292,646
Entity Public Float			$ 379,000,000

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets:
Cash	$ 14,405	$ 15,087
Accounts receivable, net	139,547	123,005
Inventories	114,851	119,836
Income tax receivable		3,989
Current deferred tax assets		6,696
Other current assets	11,752	11,568
Total current assets	280,555	280,181
Property, plant and equipment, net	322,953	318,968
Goodwill, net	450,311	449,898
Intangible assets, net	255,981	282,169
Non-current deferred tax assets		742
Investment in joint venture	40,694	38,462
Other non-current assets	9,892	10,147
Total assets	1,360,386	1,380,567
Current liabilities:
Accounts payable	75,719	69,101
Accrued salaries, wages and benefits	24,996	21,125
Income taxes payable	2,125	5,350
Current maturities of long-term debt	12,751	11,714
Current portion of obligation under capital lease	3,762	4,786
Other current liabilities	19,263	21,275
Total current liabilities	138,616	133,351
Non-current deferred tax liabilities	99,591	117,459
Long-term debt, net of current portion	785,713	795,400
Accrued post-employment benefits	5,765	6,157
Obligation under capital lease, net of current portion	5,851	9,573
Other	9,651	4,746
Total liabilities	1,045,187	1,066,686
Commitments and Contingencies (Note 15)
Stockholders' equity:
Common stock-$0.01 par value, authorized 45,000 shares, issued and outstanding 27,249 in 2016 and 26,849 in 2015	272	269
Additional paid-in capital	284,508	277,582
Retained earnings	55,509	55,151
Accumulated other comprehensive income	(25,122)	(19,153)
Non-controlling interest	32	32
Total stockholders' equity	315,199	313,881
Total liabilities and stockholders' equity	$ 1,360,386	$ 1,380,567

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2016	Dec. 31, 2015
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	27,249,000	26,849,000
Common Stock, shares outstanding	27,249,000	26,849,000

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Statement [Abstract]
Net sales	$ 833,488	$ 667,280	$ 488,601
Cost of products sold (exclusive of depreciation and amortization shown separately below)	621,022	525,993	384,889
Selling, general and administrative	80,266	51,745	43,756
Acquisition related costs excluded from selling, general and administrative		11,682	9,248
Depreciation and amortization	62,488	44,482	22,146
(Gain) loss on disposal of assets	288	(687)
Restructuring and integration	10,024	7,268	875
Income from operations	59,400	26,797	27,687
Interest Expense	63,154	29,899	10,895
Write-off of unamortized debt issuance costs	3,089	18,673	1,398
Derivative payments on interest rate swap	609
Derivative losses on change in interest rate swap fair value	2,448
Other (income) expense, net	(2,591)	1,175	2,222
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture	(7,309)	(22,950)	13,172
Provision (benefit) expense for income taxes	(9,313)	(10,518)	5,786
Share of net income from joint venture	5,938	5,001	831
Net income (loss)	7,942	(7,431)	8,217
Other comprehensive income (loss):
Change in fair value of interest rate hedge	3,015	(2,584)	(431)
Foreign currency translation gain (loss)	(8,984)	(21,936)	(17,731)
Other comprehensive income (loss)	(5,969)	(24,520)	(18,162)
Comprehensive income (loss)	$ 1,973	$ (31,951)	$ (9,945)
Basic income per share:
Net income	$ 0.29	$ (0.35)	$ 0.46
Weighted average shares outstanding	27,016	21,181	17,887
Diluted income per share:
Net income	$ 0.29	$ (0.35)	$ 0.45
Weighted average shares outstanding	27,154	21,181	18,253
Cash dividends per common share	$ 0.28	$ 0.28	$ 0.28

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2013	$ 152,760	$ 176	$ 63,126	$ 65,929	$ 23,529
Beginning Balance, Shares at Dec. 31, 2013		17,630
Net income (Loss)	8,217			8,217
Dividends declared/paid	(5,131)			(5,131)
Stock option expense	1,274		1,274
Shares issued for option exercises	1,671	$ 2	1,669
Shares issued for option exercises, shares		152
Shares issued for acquisition	31,717	$ 11	31,706
Shares issued for acquisition, shares		1,087
Restricted and performance based stock compensation expense	1,321	$ 1	1,320
Restricted and performance based stock compensation expense,shares		114
Non-controlling interest	32					$ 32
Foreign currency translation gain (loss)	(17,731)				(17,731)
Change in fair value of interest rate hedge	(431)				(431)
Ending Balance at Dec. 31, 2014	173,699	$ 190	99,095	69,015	5,367	32
Ending Balance, Shares at Dec. 31, 2014		18,983
Net income (Loss)	(7,431)			(7,431)
Dividends declared/paid	(6,433)			(6,433)
Stock option expense	915		915
Shares issued for option exercises	2,041	$ 2	2,039
Shares issued for option exercises, shares		179
Shares issued in public offering	173,052	$ 76	172,976
Shares issued in public offering, shares		7,590
Restricted and performance based stock compensation expense	2,789	$ 1	2,788
Restricted and performance based stock compensation expense,shares		115
Restricted shares forgiven for taxes and forfeited	(231)		(231)
Restricted shares forgiven for taxes and forfeited, shares		(18)
Foreign currency translation gain (loss)	(21,936)				(21,936)
Change in fair value of interest rate hedge	(2,584)				(2,584)
Ending Balance at Dec. 31, 2015	313,881	$ 269	277,582	55,151	(19,153)	32
Ending Balance, Shares at Dec. 31, 2015		26,849
Net income (Loss)	7,942			7,942
Dividends declared/paid	(7,584)			(7,584)
Stock option expense	687		687
Shares issued for option exercises	$ 2,832	$ 3	2,829
Shares issued for option exercises, shares	270	270
Restricted and performance based stock compensation expense	$ 3,583		3,583
Restricted and performance based stock compensation expense,shares		142
Restricted shares forgiven for taxes and forfeited	(173)		(173)
Restricted shares forgiven for taxes and forfeited, shares		(12)
Foreign currency translation gain (loss)	(8,984)				(8,984)
Change in fair value of interest rate hedge	3,015				3,015
Ending Balance at Dec. 31, 2016	$ 315,199	$ 272	$ 284,508	$ 55,509	$ (25,122)	$ 32
Ending Balance, Shares at Dec. 31, 2016		27,249

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income	$ 7,942	$ (7,431)	$ 8,217
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	62,488	44,482	22,146
Amortization of debt issuance costs	4,168	1,754	844
Interest rate swap:
Total derivative losses (gains), net	2,563
Debt issuance costs write-off	3,089	18,673	1,398
Joint venture net income in excess of cash received	(2,232)	(3,672)	(831)
(Gain) loss on disposals of property, plant and equipment	288	(687)
Allowance for doubtful accounts	142	745	208
Compensation expense from issuance of restricted stock and incentive stock options	4,270	3,704	2,595
Deferred income tax benefit	(10,430)	(16,878)	(1,333)
Restructuring and impairment charges
Changes in operating assets and liabilities:
Accounts receivable	(18,505)	(1,343)	(3,283)
Inventories	4,377	(1,843)	(9,836)
Other current assets	(269)	(944)	(1,624)
Other non-current assets	1,833	(1,501)	(4,828)
Accounts payable	7,633	(6,748)	9,497
Other liabilities	1,946	4,999	7,538
Net cash provided by operating activities	69,303	33,310	30,708
Cash flows from investing activities:
Acquisition of property, plant and equipment	(43,820)	(38,553)	(27,602)
Proceeds from measurement period adjustments to previous acquisition	1,635
Proceeds from disposals of property, plant and equipment	839	2,995	1,374
Cash paid to acquire businesses, net of cash received		(628,281)	(257,664)
Capital contributions to joint venture		(1,999)
Dividend received from joint venture			2,284
Net cash used by investing activities	(41,346)	(665,838)	(281,608)
Cash flows from financing activities:
Debt issue costs paid	(3,952)	(35,189)	(9,380)
Dividends Paid	(7,584)	(6,433)	(5,131)
Proceeds from long-term debt		885,000	344,750
Repayment of long-term debt	(30,000)	(401,438)	(40,880)
Proceeds from short-term debt, net	18,544	(84)	359
Proceeds from shares issued	2,832	173,052
Proceeds from issuance of stock and exercise of stock options		2,041	1,671
Payment for acquisition of non-controlling interest			(2,528)
Principal payments on capital lease	(4,148)	(5,098)	(1,888)
Net cash provided by (used in) financing activities	(24,308)	611,851	286,973
Effect of exchange rate changes on cash flows	(4,331)	(1,553)	(1,795)
Net change in cash and cash equivalents	(682)	(22,230)	34,278
Cash and cash equivalents at beginning of year	15,087	37,317	3,039
Cash and cash equivalents at end of year	14,405	15,087	37,317
Supplemental schedule of non-cash operating, investing and financing activities:
Compensation expense for stock awards, ($2,285 in 2016, $2,399 in 2015, and $1,321 in 2014) stock option expense ($825 in 2016, $915 in 2015, and $1,274 in 2014), performance based stock units ($1,159 in 2016, $393 in 2015) included in stockholders' equity	4,270	3,704	2,595
Shares issued in acquisition of Autocam			37,717
Restructuring charges in Other Liabilities	283	4,362	875
Cash paid for interest and income taxes:
Interest	59,158	20,146	8,307
Income taxes	$ 889	$ 6,377	$ 5,747

Consolidated Statements of Cas7

Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation expense for stock awards	$ 2,285	$ 2,399	$ 1,321
Stock option expense	825	915	1,274
Performance Based Stock Units [Member]
Compensation expense	$ 1,159	$ 393	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies and Practices	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Summary of Significant Accounting Policies and Practices	1) Summary of Significant Accounting Policies and Practices a) Description of Business NN, Inc. is 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, Western Europe, Eastern Europe, South America and Asia. As used in this Annual Report on Form 10-K, the terms “NN,” the “Company,” “we,” “our,” or “us” mean NN, Inc. and its subsidiaries. Included in the Selling, general and administrative expense line item in the Consolidated Statement of Operations during the years ended December 31, 2015 and 2014 are out of period adjustments in the amounts of approximately $0.2 million, respectively, to correct compensation expense recorded with respect to share based awards previously granted to executives who, either at the time of such grant or during the applicable vesting period, were eligible to retire from the Company, upon which the vesting of all or a portion of these awards would be accelerated. All dollar amounts presented in tables that follow are in thousands (except for share data) unless otherwise indicated. b) Cash We consider all highly liquid investments with an original maturity of three months or less as cash equivalents. c) Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined using the average cost method which approximates the first in first out method. Our policy is to expense abnormal amounts of idle facility expense, freight, handling cost, and waste included in cost of products sold. In addition, we allocate fixed production overheads based on the normal production capacity of our facilities. Inventory valuations were developed using normalized production capacities for each of our manufacturing locations and the costs from excess capacity or under-utilization of fixed production overheads were expensed in the period incurred and are not included as a component of inventory valuation. Inventories also include tools, molds and dies in progress that we are producing and will ultimately sell to our customers. This activity is principally related to our Autocam Precision Components and Precision Engineered Products Groups. These inventories are carried at the lower of cost or net realizable value. d) Property, Plant and Equipment Property, plant and equipment are stated at cost less accumulated depreciation. Assets to be disposed of are stated at lower of depreciated cost or fair market value less estimated selling costs. Expenditures for maintenance and repairs are charged to expense as incurred. Major renewals and betterments are capitalized. When a property item is retired, its cost and related accumulated depreciation are removed from the property accounts and any gain or loss is recorded in the consolidated Statements of Operations and comprehensive income. We review the carrying values of long-lived assets for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Property, plant and equipment includes tools, molds and dies principally used in our Autocam Precision Components and Precision Engineered Products Groups that are our property. Depreciation is provided on the straight-line method over the estimated useful lives of the depreciable assets for financial reporting purposes. For leasehold improvements and buildings under capital lease, we depreciate these over the shorter of useful lives or the lease term. In the event we abandon and cease to use certain property, plant, and equipment, depreciation estimates are revised and, in most cases, depreciation expense will be accelerated to reflect the shortened useful life of the asset. e) Revenue Recognition We recognize revenues based on the stated shipping terms with customers when these terms are satisfied and the risks of ownership are transferred to the customers. We have an inventory management program for certain Precision Bearing Components Group customers whereby revenue is recognized when products are used by customers from consigned stock, rather than at the time of shipment. Under both circumstances, revenue is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the sellers’ price is fixed and determinable and collectability is reasonably assured. f) Accounts Receivable Accounts receivable are recorded upon recognition of a sale of goods and ownership and risk of loss is assumed by the customer. Substantially all of our accounts receivable are due primarily from the core served markets. In establishing allowances for doubtful accounts, we perform credit evaluations of our customers, considering numerous inputs when available including the customers’ financial position, past payment history, relevant industry trends, cash flows, management capability, historical loss experience and economic conditions and prospects. Accounts receivable are written off or allowances established when considered to be uncollectible or at risk of being uncollectible, respectively. g) Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. Provision has not been made for income taxes on unremitted earnings of foreign subsidiaries as these earnings are deemed to be permanently reinvested. We recognize income tax positions that meet the more likely than not threshold and accrue interest and potential penalties related to unrecognized income tax positions which are recorded as a component of the provision (benefit) for income taxes. h) Net Income Per Common Share Basic income per share reflects reported earnings divided by the weighted average number of common shares outstanding. Diluted income per share include the effect of dilutive stock options and the respective tax benefits, unless inclusion would not be dilutive. i) Share Based Compensation The cost of stock options, stock awards and performance based stock units are expensed as compensation expense over the vesting periods based on the fair value at the grant date. (See Note 9 of the Notes to the Consolidated Financial Statements) We use the Black Scholes financial pricing model for our stock options, and a Monte Carlo simulation for the performance based stock units to determine the fair value as these awards as they are not traded in open markets. We account for stock awards by recognizing compensation expense ratably over the vesting period as specified in the award. Compensation expense to be recognized is based on the stock price at date of grant. j) Principles of Consolidation Our consolidated financial statements include the accounts of NN, Inc. and its subsidiaries. All of our subsidiaries are 100% owned (except for RFK which we own 99.7% and our Chinese joint venture noted below) and all are included in the consolidated financial statements for the years ended December 31, 2016, 2015 and 2014. All significant intercompany profits, transactions, and balances have been eliminated in consolidation. With the acquisition of Autocam Corporation (“Autocam”) during 2014, we acquired a 49% interest in a Chinese joint venture. This joint venture is not consolidated within the financial statements of NN, Inc. and is accounted for under the equity method (see Note 16 of the Notes to the Consolidated Financial Statements). k) Foreign Currency Translation Assets and liabilities of our foreign subsidiaries are translated at current exchange rates, while revenue, costs and expenses are translated at average rates prevailing during each reporting period. Translation adjustments arising from the translation of foreign subsidiary financial statements are reported as a component of other comprehensive income and accumulated other comprehensive income within stockholders’ equity. In addition, transactions denominated in foreign currencies, including intercompany transactions, are initially recorded at the current exchange rate at the date of the transaction. The balances are adjusted to the current exchange rate as of each balance sheet date and as of the date when the transaction is consummated. Transaction gains or losses, excluding intercompany loan transactions, are expensed in either cost of products sold or selling, general and administrative lines in the Consolidated Statements of Operations and Comprehensive Income (Loss) as incurred and were immaterial to the years ended December 31, 2016, 2015 and 2014. Transaction gains or losses on intercompany loan transactions are recognized in the other income, net line in the Consolidated Statements of Operations and Comprehensive Income (Loss) as incurred. l) Goodwill and Other Indefinite Lived Intangible Assets We recognize the excess of the purchase price of an acquired entity over the fair value of the net identifiable assets as goodwill. Goodwill is tested for impairment on an annual basis as of October 1 and between annual tests if a triggering event occurs. The impairment procedures are performed at the reporting unit level for the reporting units that have goodwill. In September 2011, the FASB issued a revised accounting standard, intended to reduce the cost and complexity of the annual goodwill impairment test by providing entities an option to perform a “qualitative” assessment to determine whether further impairment testing is necessary. Specifically, an entity has the option to first assess qualitative factors to determine whether it is necessary to perform the current two-step test. If an entity believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. For the years ended, December 31, 2016 and 2015, we determined it was more appropriate to perform a full step 1 goodwill test. The decision to perform a qualitative assessment or a complete step 1 analysis is an annual decision made by management. Based on the results of the step 1 analysis fair value of the reporting units exceeded the carrying value of the reporting units at December 31, 2016 and 2015. If the qualitative assessment indicates it is more likely than not that the fair value is less than the carrying value, GAAP prescribes a two-step process for testing for goodwill impairments. The first step is to determine if the carrying value of the reporting unit with goodwill is less than the related fair value of the reporting unit. We consider three main approaches to value (cost, market and income) the fair value of the reporting unit and market based multiples of earning and sales methods obtained from a grouping of comparable publicly trading companies. We believe this methodology of valuation is consistent with how market participants would value reporting units. The discount rate and market based multiples used are specifically developed for the unit tested regarding the level of risk and end markets served. Even though we do use other observable inputs (Level 2 inputs) the calculation of fair value for goodwill would be most consistent with Level 3 inputs. If the carrying value of the reporting unit including goodwill is less than fair value of the reporting unit, the goodwill is not considered impaired. If the carrying value is greater than fair value then the potential for impairment of goodwill exists. The potential impairment is determined by allocating the fair value of the reporting unit among the assets and liabilities based on a purchase price allocation methodology as if the reporting unit was acquired in a business combination. The fair value of the goodwill is implied from this allocation and compared to the carrying value with an impairment loss recognized if the carrying value is greater than the implied fair value. We base our fair value estimates, in large part, on management business plans and projected financial information which are subject to a high degree of management judgment and complexity. Actual results may differ from projections and the differences may be material. m) Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of Long-lived tangible and intangible assets subject to amortization are tested for recoverability when changes in circumstances indicate the carrying value of these assets may not be recoverable. A test for recoverability is also performed when management has committed to a plan to dispose of a reporting unit or asset group. Assets to be held and used are tested for recoverability when indications of impairment are evident. Recoverability of a long-lived tangible and intangible asset is evaluated by comparing its carrying value to the future estimated undiscounted cash flows expected to be generated by the asset or asset group. If the asset is not recoverable the asset is considered impaired and adjusted to fair value which is then depreciated/amortized over its remaining useful life. Assets to be disposed of are carried at the lesser of carrying value or fair value less costs of disposal. n) Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. o) Fair Value Measurements 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. p) Recently Issued Accounting Standards In 2014, the Financial Accounting Standards Board (FASB) and International Accounting Standards Board (IASB) issued the joint revenue recognition standard. Since its release, there have been multiple proposed and finalized amendments made to the revenue recognition standard. The revenue recognition standard is effective for public companies beginning January 1, 2018 with full retrospective or modified retrospective adoption permitted. This standard will change current revenue practices, processes, systems, controls, and disclosures and take time and resources to adopt. 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 those contracts are performance obligations. The revenue recognition standard may impact the timing of when revenue received under these performance obligations is recognized. We are in the scoping, performing contract analysis and the development phase of understanding the likely impacts of the standard change that can affect key processes, systems and controls. On February 25, 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”). ASU 2016-02 creates Topic 842, Leases, in the FASB Accounting Standards Codification (“FASB ASC”) and supersedes FASB 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 leasing 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. As noted in Item 2. Properties, we list various leased locations. We have also carried out inquiries within segment locations compiling information on operating and capital leases. We are currently evaluating the impacts of the lease accounting standards regarding these and other leases identified on our financial position or results of operations and related disclosures. On August 27, 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern, (“ASU 2014-15”) which provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if “conditions or events raise substantial doubt about the entity’s ability to continue as a going concern.” ASU 2014-15 applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted. We adopted ASU 2014-15 beginning December 31, 2016, which involved adding policies and procedures around our assessments to continue as a going concern. Per our quantitative and qualitative analysis, currently there is no substantial doubt as to our ability to continue as a going concern within the next twelve months. During March 2016, ASU 2016-09 – The FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). This ASU provides clarification on how certain cash receipts and cash payments are presented and classified on the statement of cash flows. This ASU is effective for annual and interim periods beginning in 2018 and is required to be adopted using a retrospective approach if practicable, with early adoption permitted. The Company does not expect the adoption of this ASU to have a material impact on its Consolidated Statement of Cash Flows. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures. During January 2017, the FASB issued ASU 2017-04 – Simplifying the Test for Goodwill Impairment that eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of today’s 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 today’s Step 1). The standard has tiered effective dates, starting in 2020 for calendar-year public business entities that meet the definition of an SEC filer. Early adoption is permitted for interim and annual goodwill impairment testing dates after 1 January 2017. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures. We adopted ASU No. 2015-11, Inventory (Topic 330)-Simplifying the Measurement of Inventory (“ASU 2015-11”), which simplifies the subsequent measurement of inventories by replacing the lower of cost or market test with a lower of cost and net realizable value test. The subsequent measurement of inventory test, historically three measurements under lower of cost or market, is replaced by lower of cost and net realizable value test. Thus, we will compare the cost of inventory to only one measure, its net realizable value. When evidence exists that the net realizable value of inventory is less than its cost (due to damage, physical deterioration, obsolescence, changes in price levels or other causes), we will recognize the difference as a loss in earnings in the period in which it occurs. In accordance with ASU 2015-11, we are applying the new guidance on a prospective basis. We adopted ASU No. 2015-17, Income Taxes (Topic 740), Balance Sheet Classification of Deferred Taxes (“ASU 2015-17”). We will classify all deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amounts. In addition, we will no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances also will be classified as noncurrent. We have elected to apply ASU 2015-17 on a prospective basis. Therefore, the prior periods were not retroactively adjusted. q) Business Combinations We allocate the total purchase price of the acquired tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of the business combination date, with the excess purchase price recorded as goodwill. The purchase price allocation process required us to use significant estimates and assumptions, including fair value estimates, as of the business combination date. Although we believe the assumptions and estimates we have made are reasonable and appropriate, they are based in part on historical experience and information obtained from management of the acquired company, in part based on valuation models that incorporate projections of expected future cash flows and operating plans and are inherently uncertain. Valuations are performed by management or third party valuation specialists under management’s supervision. In determining the fair value of assets acquired and liabilities assumed in business combinations, as appropriate, we may use one of the following recognized valuation methods: the income approach (including discounted cash flows from relief from royalty and excess earnings model), the market approach and/or the replacement cost approach. Examples of significant estimates used to value certain intangible assets acquired include but are not limited to: • sales volume, pricing and future cash flows of the business overall; • future expected cash flows from customer relationships, and other identifiable intangible assets, including future price levels, rates of increase in revenue and appropriate attrition rate; • the acquired company’s brand and competitive position, royalty rate quantum, as well as assumptions about the period of time the acquired brand will continue to benefit to the combined company’s product portfolio; and • cost of capital, risk-adjusted discount rates and income tax rates. However, different assumptions regarding projected performance and other factors associated with the acquired assets may affect the amount recorded under each type of assets and liabilities, mainly between property plant and equipment, intangibles assets, goodwill and deferred income tax liabilities and subsequent assessment could result in future impairment charges. The purchase price allocation process also entails us to refine these estimates over a measurement period not to exceed one year to reflect new information obtained surrounding facts and circumstances existing at acquisition date.

Acquisitions

Acquisitions	12 Months Ended
	Dec. 31, 2016
PEP [Member]
Acquisitions	2) Acquisitions As reported in our 2015 Annual Report, we completed the acquisition (the “PEP Acquisition”) of Precision Engineered Products Holdings, Inc. (“PEP”) on October 19, 2015. During the nine months ended September 30, 2016, we finalized all issues related to customary working capital adjustments, fixed assets and income taxes. The changes primarily arose from differences noted during acquisition integration and finalizing return to provision adjustments. As a result, we adjusted the preliminary allocation of the purchase price initially recorded at the PEP Acquisition date to reflect these measurement period adjustments. The following table summarizes the final purchase price allocation for the PEP Acquisition: As Reported Subsequent Final on Adjustments as of December 31, to fair September 30, 2015 value 2016 Consideration: Cash paid $ 621,196 $ — $ 621,196 Cash adjustment — (1,635 ) (1,635 ) Total consideration $ 621,196 $ (1,635 ) $ 619,561 Fair value of assets acquired and liabilities assumed on Current assets $ 69,331 $ 452 $ 69,783 Property, plant and equipment 56,163 (962 ) 55,201 Intangible assets subject to amortization 240,490 — 240,490 Other non-current assets 1,500 — 1,500 Goodwill 364,450 (1,805 ) 362,645 Total assets acquired 731,934 (2,315 ) 729,619 Current liabilities 21,131 — 21,131 Non-current deferred tax liabilities 87,578 (680 ) 86,898 Other non-current liabilities 2,029 — 2,029 Total liabilities assumed 110,738 (680 ) 110,058 Net assets acquired $ 621,196 $ (1,635 ) $ 619,561 In accordance with generally accepted accounting principles, we have recognized measurement-period adjustments during the period in which we determine the amount of the adjustment, including the effect on earnings of any amounts we would have recorded in previous periods if the accounting had been completed at the acquisition date.

Restructuring, Impairment and I

Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures	12 Months Ended
	Dec. 31, 2016
Restructuring and Related Activities [Abstract]
Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures	3) Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures Restructuring and integration costs totaling $10.0 million and $7.3 million were recognized in the years ended December 31, 2016 and 2015, comprised of initiatives impacting each of our segments. 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 $4.4 and $2.0 million for the years ended December 31, 2016 and 2015, respectively. 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 $4.3 and $2.6 million for the years ended December 31, 2016 and 2015, respectively. These charges consisted of severance costs of $0.8 million, fixed asset impairment of $0.3 million and site closure costs of $3.2 million for 2016. Within the Precision Engineered Products (“PEP”) Group, initiatives resulted in integration, site closure and employee costs of $1.3 and $0.9 million for the years ended December 31, 2016 and 2015, respectively. Within the Corporate and Consolidated Segment, a charge of $1.8 million was incurred for an accounting and reporting system that was ultimately never deployed and abandoned for the year ended December 31, 2015. The following table summarizes restructuring and integration activity related to actions incurred for the years ended December 31, 2016 and 2015: Year Ended December 31, 2016 2015 Severance and other employee costs $ 5,776 $ 2,019 Site closure and other associated costs 3,970 4,399 Integration and other associated costs 278 850 Total $ 10,024 $ 7,268 Reserve Reserve Balance at Paid in Balance at December 31, 2015 Charges 2016 December 31, 2016 Severance and other employee costs $ 2,517 $ 5,776 $ (5,274 ) $ 3,019 Site closure and other associated costs 1,845 3,970 (4,189 ) 1,626 Integration and other associated costs — 278 (278 ) — Total $ 4,362 $ 10,024 $ (9,741 ) $ 4,645 Reserve Paid in Reserve Balance at Balance at December 31, 2014 Charges 2015 December 31, 2015 Severance and other employee costs $ — $ 2,691 $ (174 ) $ 2,517 Site closure and other associated costs — 1,925 $ (80 ) 1,845 Impairment and write-off charges — 2,652 $ — — Integration and other associated costs — — — — Total $ — $ 7,268 $ (254 ) $ 4,362 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 year ended December 31, 2016 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.

Accounts Receivable and Sales C

Accounts Receivable and Sales Concentrations	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Accounts Receivable and Sales Concentrations	4) Accounts Receivable and Sales Concentrations December 31, 2016 2015 Trade $ 140,754 $ 124,226 Less—allowance for doubtful accounts 1,207 1,221 Accounts receivable, net $ 139,547 $ 123,005 Activity in the allowance for doubtful accounts is as follows: Balance at Beginning Write- Currency Balance at Description of Year Additions offs Impacts End of Year December 31, 2016 Allowance for doubtful accounts $ 1,221 $ 142 $ (75 ) $ (81 ) $ 1,207 December 31, 2015 Allowance for doubtful accounts $ 520 $ 745 $ (8 ) $ (36 ) $ 1,221 December 31, 2014 Allowance for doubtful accounts $ 445 $ 208 $ (123 ) $ (10 ) $ 520 For the years ended December 31, 2016, 2015 and 2014, sales to AB SKF (“SKF”) amounted to $104.2 million, $105.7 million, and $128.0 million, respectively, or 13%, 16%, and 26% of consolidated revenues, respectively. None of our other customers accounted for more than 10% of our net sales in 2016, 2015 or 2014. SKF was the only customer with accounts receivable concentration in excess of 10% in 2016 and 2015. The outstanding balance as of December 31, 2016 and 2015 for SKF was $20.5 million and $16.2 million, respectively. All revenues and receivables related to SKF are in the Precision Bearing Components Group and Precision Engineered Products Group.

Inventories

Inventories	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Inventories	5) Inventories December 31, December 31, 2016 2015 Raw materials $ 49,205 $ 50,204 Work in process 31,348 30,604 Finished goods 34,298 39,028 Inventories $ 114,851 $ 119,836 Finished goods inventory on consignment at customers’ sites at December 31, 2016 and 2015 was approximately $5.0 million and $5.1 million, respectively. The inventory valuations above were developed using normalized production capacities for each of our manufacturing locations. Any costs from abnormal excess capacity or under-utilization of fixed production overheads are expensed in the period incurred and are not included as a component of inventory valuation.

Property, Plant and Equipment

Property, Plant and Equipment	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Property, Plant and Equipment	6) Property, Plant and Equipment Estimated December 31, Useful Life 2016 2015 Land and buildings 15-40 years 96,173 97,322 Machinery and equipment 3-12 years 464,291 432,841 Construction in process 21,045 16,049 581,509 546,212 Less—accumulated depreciation 258,556 227,244 Property, plant and equipment, net $ 322,953 $ 318,968 During the year ended December 31, 2015, we acquired $59.1 million in property, plant and equipment with the two acquisitions completed during 2015. For the years ended December 31, 2016, 2015, and 2014, depreciation expense was $36.0 million, $ 31.5 million and $20.8 million, respectively.

Debt

Debt	12 Months Ended
	Dec. 31, 2016
Debt Disclosure [Abstract]
Debt	7) Debt Long-term debt and short-term debt at December 31, 2016 and December 31, 2015 consisted of the following: Amended December 31, December 31, 2016 2015 Borrowings under our $545.0 million Senior Secured Term Loan B bearing interest at the greater of 0.75% or 1 month LIBOR (0.77% at December 31, 2016) plus an applicable margin of 4.25% at September 30, 2016, expiring October 19, 2022, net of debt issuance costs of $19.0 million at December 31, 2016 and $20.6 million at December 31, 2015. $ 524,539 $ 552,957 Borrowings under our $143.0 million Senior Secured Revolver bearing interest at LIBOR (0.77% at December 31, 2016) plus an applicable margin of 3.50% at September 30, 2016, expiring October 19, 2020, net of debt issuance costs of $2.7 million at December 31, 2016 and $2.9 million at December 31, 2015. 25,298 3,547 Borrowings under our $250.0 million Senior Notes bearing interest at 10.25%, maturing on November 1, 2020, net of debt issuance costs of $4.9 million at December 31, 2016 and $5.9 million at December 31, 2015. 245,077 244,088 French Safeguard Obligations (Autocam) 358 2,000 Brazilian lines of credit and equipment notes (Autocam) 573 826 Chinese line of credit (Autocam) 2,619 3,696 Total debt 798,464 807,114 Less current maturities of long-term debt 12,751 11,714 Long-term debt, excluding current maturities of long-term debt $ 785,713 $ 795,400 On October 19, 2015, we: (i) entered into a new senior secured term loan credit facility in the amount of up to $525.0 million (with a $100.0 million accordion feature) and a seven year maturity (as amended, supplemented and/or restated from time to time, the “Term Loan Credit Facility”); (ii) entered into a new senior secured revolving credit facility in the amount of up to $100.0 million with a five year maturity (as amended, supplement and/or restated from time to time, the “Senior Secured Revolving Credit Facility”, and together with the Term Loan Credit Facility, the “Senior Credit Facilities”); and (iii) issued $300.0 million of 10.25% senior notes due 2020 (the “Senior Notes”). On September 30, 2016, we amended and restated the Senior Credit Facilities, which lowered the interest rate and rate floor on the Company’s Senior Secured Term Loan B (the “Term Loan B”). The new applicable rate for the Term Loan B is London Inter Bank Offering Rate (“LIBOR”), subject to a 0.75% rate floor, plus 4.25%, which in combination is 75 basis points lower (or 0.75%) than the previous rate. There were no changes to the maturities or covenants under the Term Loan B. Concurrent with the amended and restated Term Loan B, the Senior Secured Revolving Credit Facility was upsized from $100 million to $133 million. Proceeds were drawn under the Senior Secured Revolving Credit Facility to pay down debt under the Term Loan B, reducing the debt under the Term Loan B to $545 million. During October 2016, an incremental amendment was executed increasing the $133 million Senior Secured Revolving Credit Facility to $143 million. There were no changes to the Senior Secured Revolving Credit Facility maturities, and the covenant threshold was increased from $30 million to $42.9 million (30% drawn threshold). The outcome of the refinancing and debt transactions was lower principal amounts outstanding on the Term Loan B, increased borrowings under the Senior Secured Revolving Credit Facility, resulting in a lower effective interest rate for the overall debt holdings. In conjunction with the amended and restated Senior Credit Facilities, we incurred $4.0 million in debt issuance costs. We wrote off a total of $2.6 million in debt issuance costs related to the modification and extinguishment of debt. As part of the merger with Autocam in 2014, 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 December 31, 2016 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 9.1%. The Chinese line of credit is a working capital line of credit with a Chinese bank bearing an annual interest rate ranging from 1.4% to 4.6%. In accordance with generally accepted accounting principles, we have adopted ASU 2015-03, which provides guidance on simplifying the presentation of debt issuance costs on the balance sheet. To simplify presentation of debt issuance costs, the amendments in ASU 2015-03 require that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. The following table displays the debt amounts reported as of December 31, 2015, restated for the adoption of ASU 2015-03. The debt issuance costs were reclassified from other non-current assets and directly applied to the associated liability. Reported ASU 2015-13 Amended Borrowings under our $575.0* million Senior Secured Term $ 562,580 $ (9,623 ) $ 552,957 Borrowings under our $100.0** million Senior Secured Revolver 6,462 (2,915 ) 3,547 Borrowings under our $250.0 million Senior Notes 244,509 (421 ) 244,088 French Safeguard Obligations (Autocam) 2,000 2,000 Brazilian lines of credit and equipment notes (Autocam) 826 826 Chinese line of credit (Autocam) 3,696 3,696 Total debt 820,073 807,114 Less current maturities of long-term debt 11,714 11,714 Long-term debt, excluding current maturities of long-term debt $ 808,359 $ 795,400 * Amended from $575 million down to $545 million on September 30, 2016. ** Amended from $100 million up to $133 million on September 30, 2016; incremental amendment from $133 million up to $143 million in October 2016. The aggregate maturities of long-term debt including current portion for each of the five years subsequent to December 31, 2016 are as follows: Year ending December 31, 2017 $ 12,751 2018 5,968 2019 5,968 2020 279,841 2021 5,750 Thereafter 514,812 Total debt $ 825,090 Less debt issuance costs (26,626 ) Total debt, net of debt issuance cost $ 798,464 On June 1, 2004, our wholly owned subsidiary, NN Asia, entered into a twenty-year lease agreement with Kunshan Tian Li Steel Structure Co. LTD for the lease of land and building (approximately 110,000 square feet) in the Kunshan Economic and Technology Development Zone, Jiangsu, The People’s Republic of China. The fair value of the land and building was estimated to be approximately $0.5 million and $1.9 million (at current exchange rates), respectively and undiscounted annual lease payments are approximately $0.3 million (approximately $5.6 million aggregate non-discounted lease payments over the twenty year term). The lease is cancelable after the fifth, ninth, and fourteenth years without payment or penalty by us. In addition, after the end of year five and each succeeding year we can buy the land for a preset price per square meter value and the building for actual cost less depreciation. On October 1, 2011, our wholly owned subsidiary, NN Asia, entered into a twenty year lease agreement with Kunshan Tian Li Steel Structure Co. LTD for the lease of land and building adjacent to the current leased facility (approximately 75,000 square feet) in the Kunshan Economic and Technology Development Zone, Jiangsu, The People’s Republic of China. This lease was entered into to expand the production capacity of our current leased facility. The fair value of the land and building was estimated to be approximately $0.8 million and $1.1 million (at current exchange rates), respectively and undiscounted annual lease payments are approximately $0.2 million (approximately $3.6 million aggregate non-discounted lease payments over the twenty year term). The lease is cancelable after the fifth, ninth, and fourteenth years without payment or penalty by us. In addition, after the end of year five and each succeeding year we can buy the land for a preset price per square meter value and the building for actual cost less depreciation. Below are the aggregate minimum future lease payments under both capital leases together with the present value of the net minimum lease payments as of December 31, 2016: Year ending December 31, 2017 $ 434 2018 434 2019 434 2020 434 2021 434 Thereafter 2,601 Total minimum lease payments 4,771 Less interest included in payments above (1,462 ) Present value of minimum lease payments $ 3,309 With the Autocam acquisition, we assumed capital leases on certain buildings and equipment. The cost of the assets subject to capital lease obligations as reflected in Property, Plant and Equipment, net in our Consolidated Balance Sheet was $25.0 million as of December 31, 2014. The accumulated depreciation of such assets as reflected in Property, Plant and Equipment, net in our Consolidated Balance Sheet was $3.6 million and $2.6 million as of December 31, 2016 and 2015, respectively. Below are the minimum future lease payments under the assumed capital leases together with the present value of the net minimum lease payments as of December 31, 2016: Year ending December 31, 2017 $ 3,521 2018 2,530 2019 803 2020 0 2021 0 Thereafter 0 Total minimum lease payments 6,854 Less interest included in payments above (282 ) Present value of minimum lease payments $ 6,572

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plans	8) Employee Benefit Plans We have defined contribution 401(k) profit sharing plans covering substantially all U.S. employees. All eligible employees may enroll in the plans on the first day of the month following their employment date. A participant may elect to contribute between 1% and 60% of their compensation to the plans, subject to Internal Revenue Service (“IRS”) dollar limitations. Participants age 50 and older may defer an additional amount up to the applicable IRS Catch Up Provision Limit. We provide a matching contribution, which is determined on an individual, participating company basis. All participant contributions are immediately vested at 100%. Contributions for all U.S. employees were $2.3 million, $0.2 million and $0.8 million in 2016, 2015, and 2014, respectively. Post-Employment Benefit Liabilities We provide certain post-employment benefits to employees at our Pinerolo and Veenendaal plants that are either required by law or are local labor practice. There is a plan at each of our Pinerolo and Veenendaal plants, which are described below. In accordance with Italian law, we have an unfunded severance plan under which all Italian employees are entitled to receive severance indemnities (Trattamento di Fine Rapporto or “TFR”) upon termination of their employment. Effective January 1, 2007, the amount payable, based on salary paid, is remitted to a pension fund managed by a third party. The severance indemnities paid to the pension fund accrue approximately at the rate of 1/13.5 of the gross salaries paid during the year. The amounts accrued become payable upon termination of the individual employee, for any reason, e.g., retirement, dismissal or reduction in work force. Employees are fully vested in TFR benefits after their first year of service. We have a plan that covers our Veenendaal plant employees that provides an award for employees who achieve 25 or 40 years of service and an award for employees upon retirement. The plan is unfunded and the benefits are based on years of service and rate of compensation at the time the award is paid. The amounts shown in the table below represent the actual liabilities at December 31, 2016 and 2015 reported under accrued post-employment benefits in the Consolidated Balance Sheets for both plans combined. 2016 2015 Beginning balance $ 5,189 $ 6,024 Amounts accrued 135 53 Payments to employees/government managed plan (452 ) (266 ) Foreign currency impacts (165 ) (622 ) Ending balance $ 4,707 $ 5,189 Defined Benefit Plan Effective with the Autocam acquisition on August 29, 2014, we sponsor a defined benefit pension plan (the “Pension Plan”) for substantially all employees of the Bouverat, France plant. These benefits are calculated based on each employee’s years of credited service and most recent monthly compensation and service category. Employees become vested in accordance with governmental regulations in place at the time of retirement. For the purpose of calculating the 2016 actuarial present value of the benefit obligation under the Pension Plan, the discount rates assumed were 1.6%. The compensation growth rate was assumed was 3.0% for 2016. The measurement date was December 31, 2016. For the purpose of calculating the 2015 actuarial present value of the benefit obligation under the Pension Plan, the discount rates assumed were 2.2%. The compensation growth rate was assumed was 3.0% for 2015. The measurement date was December 31, 2016. Set forth below is projected benefit obligation information for the Pension Plan and the plan activity for the years ended December 31, 2016 and 2015: 2016 2015 Accumulated benefit obligation at measurement date $ 949 $ 950 Effect of salary increases 533 494 Projected benefit obligation at measurement date $ 1,482 $ 1,444 Projected benefit obligation at date of acquisition $ 1,444 $ 1,537 Service and interest costs 113 103 Actuarial gains (losses) 118 (15 ) Benefits paid (141 ) (22 ) Effect of foreign currency translation gains and other (50 ) (159 ) Projected benefit obligation at measurement date $ 1,484 $ 1,444 Set forth below is net periodic benefit cost information for the Pension Plan for the years ended December 31, 2016 and 2015: 2016 2015 Service and interest costs $ 113 $ 103 Expected return on plan assets (10 ) (11 ) Amortization of prior service costs 27 28 Net periodic benefit cost $ 130 $ 120 We expect benefit payments under the Pension Plan to be: Year ending December 31, 2017 $ 14 2018 7 2019 — 2020 25 2021 9 2022-2026 213 Total benefit payments 268 Set forth below is plan asset information for the Pension Plan: 2016 2015 Plan assets at fair value at measurement date $ 426 $ 515 Projected benefit obligations at measurement date (1,482 ) (1,444 ) Funded status $ (1,056 ) $ (929 ) Plan assets at fair value at date of acquisition $ 515 $ 589 Actual return on plan assets 64 9 Benefits paid (141 ) (22 ) Effect of foreign currency translation gains (13 ) (61 ) Plan assets at fair value at measurement date $ 425 $ 515 The assumed rate of return on assets of the Pension Plan was 2.0% for all periods presented. We have a targeted goal of allocating plan assets one-third to equity and two-thirds to fixed income securities. Actual allocations of Pension Plan assets between equity and fixed income securities were 35% and 65%, respectively, as of December 31, 2016. Our expected funding obligations under the Pension Plan in 2017 is approximately $0.1 million. Even though we do use other observable inputs (Level 2 inputs under the GAAP hierarchy), the calculation of fair value for pension plan assets and liabilities would be most consistent with Level 3 under the GAAP hierarchy.

Stock Based Compensation

Stock Based Compensation	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Stock Based Compensation	9) Stock Based Compensation We recognize compensation expense of all employee and non-employee director share-based compensation awards in the financial statements based upon the fair value of the awards over the requisite service or vesting period, less anticipated forfeitures. We account for stock awards by recognizing the fair value of the awarded stock at the grant date as compensation expense over the vesting period, less anticipated forfeitures. In the years ended December 31, 2016, 2015, and 2014, approximately $4.3 million, $3.7 million, and $2.6 million, respectively of compensation expense was recognized in selling, general and administrative expense for all share-based awards. The compensation expense recognized in the years ended December 31, 2016, 2015 and 2014 related to stock options was $0.8 million, $0.9 million and $1.3 million, respectively. The compensation expense related to stock awards in the years ended December 31, 2016, 2015 and 2014 was $2.3 million, $2.4 million and $1.3 million, respectively. The compensation expense related to performance based awards in the year ended December 31, 2016 and 2015, was $1.2 and $0.4 million, respectively. As of December 31, 2016, we have approximately 2,300 maximum shares that can be issued as options, stock appreciation rights, and/or other stock based awards. Stock Option Awards Option awards are typically granted to non-executive directors and key employees on an annual basis. A single option grant is typically awarded to eligible employees and non-executive directors each year if and when granted by the Compensation Committee of the Board of Directors and occasionally individual grants are awarded to eligible employees. All employee and non-executive directors are awarded options at an exercise price equal to the closing price of our stock on the date of grant. The term life of options is ten years with vesting periods of generally three years for key employees and one year for non-executive directors. The fair value of our options cannot be determined by market value as they are not traded in an open market. Accordingly, the Black Scholes financial pricing model is utilized to determine fair value based on certain assumptions discussed below. During 2016, 2015 and 2014, we granted options to purchase 167,000, 54,600, and 108,620 shares, respectively, to certain key employees and non-employee directors. The weighted average grant date fair value of the options granted during the years ended December 31, 2016, 2015 and 2014 was $5.02, $12.61 and $9.48, respectively. Upon exercise of stock options, new shares of our stock are issued. The weighted average assumptions relevant to determining the fair value at the dates of grant are below: 2016 2015 2014 Term 6 years 6 years 6 years Risk free interest rate 1.43 % 1.43 % 1.75 % Dividend yield 2.48 % 1.11 % 1.43 % Expected volatility 59.23 % 59.22 % 56.75 % Expected forfeiture rate 3.00 % 3.00 % 3.00 % The expected volatility rate is derived from our actual common stock historical volatility over the same time period as the expected term. The volatility rate is derived by mathematical formula utilizing daily closing price data. The expected dividend yield is derived by a mathematical formula which uses the expected annual dividends over the expected term divided by the fair market value of our common stock at the grant date. The average risk-free interest rate is derived from United States Department of Treasury published interest rates of daily yield curves for the same time period as the expected term. The forfeiture rate is determined from examining the historical pre-vesting forfeiture patterns of past option issuances to key employees. While the forfeiture rate is not an input of the Black Scholes model for determining the fair value of the options, it is an important determinant of stock option compensation expense to be recorded. The term is derived from using the “Simplified Method” of determining stock option terms as described under the Securities and Exchange Commission’s Staff Accounting Bulletin 107. The following table provides a reconciliation of option activity for the year ended December 31, 2016: Options Shares (000) Weighted- Weighted- Aggregate Outstanding at January 1, 2016 1,034 $ 12.09 Granted 167 $ 11.31 Exercised (270 ) $ 10.49 Forfeited or expired (34 ) $ 17.52 Outstanding at December 31, 2016 897 $ 12.22 5.9 6,479 (1) Exercisable at December 31, 2016 686 $ 11.59 4.9 5,267 (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 December 31, 2016. As of December 31, 2016, there was approximately $0.6 million, $1.0 million and $2.0 million of unrecognized compensation costs for stock options, restricted stock and performance based awards, respectively, to be recognized over approximately two years. Cash proceeds from the exercise of options in the years ended December 31, 2016, 2015, and 2014 totaled approximately $2.6 million, $2.0 million, and $1.7 million, respectively. For the years ended December 31, 2016, 2015 and 2014, proceeds from stock options were presented exclusive of tax benefits in the Financing Activities section of the Consolidated Statements of Cash Flows. The total intrinsic value of options exercised during the years ended December 31, 2016, 2015 and 2014 was $2.9 million, $2.6 million and $2.0 million, respectively. Stock Awards During the year ended December 31, 2016, 2015 and 2014, we issued 152,510, 114,475 and 114,300 shares, respectively, of our common stock as awards to key employees and non-executive directors. The fair value of the 2016 shares issued was determined by using the grant date price of our common stock with a weighted average grant date value of $11.39. The recognized compensation expense for stock awards in the years ended December 31, 2016, 2015, and 2014 was approximately $2.3 million, $2.4 million, and $1.3 million, respectively. The shares issued in 2016, 2015 and 2014 vest over three years. Performance Based Awards On March 16, 2016 and April 30, 2015, we awarded performance share units (the “PSUs”) to our executive officers. The PSUs are a form of long-term incentive compensation designed to directly align the interests of employees to the interests of our stockholders, and to create long-term stockholder value. The awards were made pursuant to the NN, Inc. 2011 Stock Incentive Plan and a Performance Share Unit Agreement. There were two tranches of PSUs awarded, PSUs based on total shareholder return (“TSR Awards”) and PSUs based on return on invested capital (“ROIC Awards”). The TSR Awards vest, if at all, upon our achieving a specified relative total shareholder return, which will be measured against the total shareholder return of the S&P SmallCap 600 Index during the period beginning on March 16, 2016 and ending December 31, 2018 for the 2016 awards and the period beginning February 1, 2015 and ending December 31, 2017 for the 2015 awards (the “Performance Periods”). The ROIC Awards will vest, if at all, upon our achieving a specified average return on invested capital during the Performance Periods. If the PSUs do not vest at the end of the Performance Periods, the PSUs will expire automatically. Upon vesting, the PSUs will be settled by the issuance of shares of our common stock, subject to the executive officer’s continued employment. The actual number of shares of common stock will be issued to each award recipient at the end of the Performance Periods will be interpolated between a threshold and maximum payout amount based on actual performance results. No dividends will be paid on outstanding PSUs during the Performance Period; however, dividend equivalents will be paid based on the number of shares of common stock that are ultimately earned at the end of the Performance Periods. With respect to the TSR Awards, a participant will earn 50% of the target number of PSUs for “Threshold Performance,” 100% of the target number of PSUs for “Target Performance,” and 150% of the target number of PSUs for “Maximum Performance.” With respect to the ROIC Awards, a participant will earn 35% of the target number of PSUs for “Threshold Performance,” 100% of the target number of PSUs for “Target Performance,” and 150% of the target number of PSUs for “Maximum Performance. For performance levels falling between the values shown below, the percentages will be determined by interpolation. The following table establish the goals with respect to TSR and ROIC: TSR: Threshold Performance (50% of Shares) Target Performance Maximum Performance 35th Percentile 50th Percentile 75th Percentile ROIC: Threshold Performance (35% of Shares) Target Performance Maximum Performance 11% 12.5 % 14 % During 2016 and 2015, we awarded 101,165 and 35,775 TSR Awards and 101,165 and 35,775 ROIC Awards with a grant date fair value of $9.38 and $28.61 for TSR Awards and $11.31 and $25.16 per unit for ROIC Awards, respectively. We estimate the grant date fair value of TSR Awards using the Monte Carlo simulation model, as the total shareholder return metric is considered a market condition under ASC 718. The grant date fair value of ROIC Awards is based on the closing price of a share of our common stock on the date of grant. The recognized compensation expense for the year ended December 31, 2016 and 2015 was $1.2 million and $0.4 million, respectively, for all PSUs. Unrecognized compensation expense at December 31, 2016 was $2.0 million to be recognized over approximately two years. During the three months ended June 30, 2016, we recorded an out of period adjustment to correct compensation expense recoded with respect to share-based awards previously granted to executives who, either at the time of such grant or during the applicable vesting period, were eligible to retire from the Company, upon which the vesting of all or a portion of these awards would be accelerated. If the out of period amounts would have been recorded in the appropriate periods, then the Selling, general and administrative expense line item in the Consolidated State of Operations for the years ended December 31, 2015 and 2014 would have been effected by $0.1 million and $32 thousand pre-tax amounts, respectively, increasing expense.

Goodwill, Net

Goodwill, Net	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill, Net	10) Goodwill, Net We completed our annual goodwill impairment review during the fourth quarters of 2016 and 2015. For the years ended December 31, 2016, 2015 and 2014, we concluded that there were no indicators of impairment at the reporting units with goodwill. The changes in the carrying amount of goodwill for the years ended December 31, 2016, 2015 and 2014 are as follows: Precision Autocam Precision Total Balance as of December 31, 2014 $ 9,949 $ 73,992 $ — $ 83,941 Currency impacts (838 ) — — (838 ) Goodwill acquired in acquisition — — 366,795 366,795 Balance as of December 31, 2015 $ 9,111 $ 73,992 $ 366,795 $ 449,898 Currency impacts (202 ) (601 ) (2,051 ) (2,854 ) Adjustments to goodwill — — (1,805 ) (1,805 ) Other adjustments (a) — (2,674 ) 7,746 5,072 Balance as of December 31, 2016 $ 8,909 $ 70,717 $ 370,685 $ 450,311 (a) During the year ended December 31, 2016, the Company identified certain prior period errors primarily relating to the initial recognition of goodwill and deferred taxes in purchase accounting (see Note 13) and the subsequent foreign currency translation of goodwill. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors in 2016 as reflected above. The accumulated impairment charges included in the reported goodwill balances at December 31, 2016, 2015 and 2014 were $40.0 million all of which were recorded during the years ended December 31, 2008 and 2007. The goodwill acquired in the 2015 acquisitions within the Precision Engineered Products Group was primarily related to the PEP Acquisition. (See Note 2 of the Notes to Consolidated Financial Statements). The goodwill balance related to the PEP Acquisition is derived from the value of the Precision Engineered Products Group. This fair value was based in large part on management business plans and projected financial information which are subject to a high degree of management judgment and complexity. Actual results may differ from these projections, and the differences may be material leading to a potential impairment of this goodwill if this reporting unit’s future results are not as forecasted.

Intangible Assets, Net

Intangible Assets, Net	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Intangible Assets, Net	11) Intangible Assets, Net The change in the carrying amount of intangible assets, net, for the years ended December 31, 2016 and 2015 are as follows: Precision Autocam Precision Total Balance as of December 31, 2014 $ 2,328 $ 50,499 $ — $ 52,827 Additions — — 242,980 242,980 Amortization (238 ) (3,625 ) (9,180 ) (13,043 ) Currency impacts (138 ) (457 ) — (595 ) Balance as of December 31, 2015 $ 1,952 $ 46,417 $ 233,800 $ 282,169 Amortization (207 ) (3,533 ) (22,465 ) (26,205 ) Currency impacts (27 ) 44 — 17 Balance as of December 31, 2016 $ 1,718 $ 42,928 $ 211,335 $ 255,981 With the PEP Acquisition, the Precision Engineered Products Group acquired a customer relationship intangible asset of $226.5 million, a trade name intangible asset of $6.3 million, a backlog and unfavorable leasehold intangible of $7.7 million. The intangible assets have estimated useful lives of 12 years for customer relationships and 8 years for trade name, and the backlog and unfavorable leases will be amortized over the fourth quarter of 2015 and first quarter of 2016. After the estimated useful lives of the backlog and inventory, the estimated amortization of intangibles will be approximately $19.7 million a year. With the Caprock acquisition, the Precision Engineered Products Group acquired $2.5 million of intangibles, approximately $0.1 in trade names and $2.4 million in customer relationships. The intangibles have estimated useful lives of one year for trade names and 12 years for customer relationships. The estimated amortization of the intangibles will be approximately $0.2 million per year. The Autocam Precision Components Group has an intangible asset not subject to amortization of $0.9 million related to the value of the trade names of Whirlaway. This indefinite lived intangible asset was impaired during the year ended December 31, 2014 as management is in the process of phasing out the use of the trade name as a result of the Autocam acquisition. As such, an impairment charge of $0.9 million was included in the restructuring and impairment charges line of the Consolidated Statements of Operations and Comprehensive Income (Loss). With the Autocam acquisition, the Autocam Precision Components Group acquired a customer contract intangible asset of $46.2 million, a trade name intangible asset of $4.1 million, a developed technology intangible asset of $0.9 million, and net favorable leasehold intangible of $0.4 million. The trade names and customer relationship intangible assets have estimated useful lives of 15 years, and the remaining intangibles have a five year useful life. The estimated amortization for the first five year will be approximately $3.5 million per year. The Precision Bearing Components Group acquired two customer contract intangible assets related to the acquisition of RKF and Chelsea and a trade name intangible asset related to the acquisition of RFK with an aggregate estimated fair value of $2.7 million. These intangible assets have weighted average useful lives of 10 years and are subject to amortization of approximately $0.3 million per year.

Segment Information

Segment Information	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Information	12) Segment Information We determined our reportable segments under the provisions of GAAP related to disclosures about segments of an enterprise. Our three reportable segments are based on differences in product lines. All of the facilities in the Precision Bearing Components Group are engaged in the production of precision steel balls, steel rollers, and metal retainers and automotive specialty products used primarily in the bearing industry. The Precision Engineered Products Group includes the Plastic and Rubber Components Group as presented in previous filings. The name of this segment was changed during 2015 after the PEP Acquisition and disposal of Delta Rubber. With the completion of the PEP Acquisition, we added a global manufacturer of highly engineered precision customized solutions serving the medical, electrical, automotive, aerospace and defense end markets. The Autocam Precision Components Group is engaged in the design and manufacture of close-tolerance, precision-machined metal components. Currently, we manufacture components for use in fuel delivery, electromechanical motor, steering and braking systems for the automotive industry and highly engineered shafts, mechanical components, complex precision assembled and tested parts and fluid system components for the HVAC and fluid power industries. This segment was renamed with the acquisition of Autocam. Precision Precision Autocam Corporate and Total December 31, 2016 Net sales $ 248,534 $ 258,816 $ 326,138 $ — $ 833,488 Depreciation and amortization 11,676 28,020 22,189 603 62,488 Income from operations 22,985 34,744 29,516 (27,845 ) 59,400 Interest expense 63,154 63,154 Income tax (benefit) expense (9,313 ) (9,313 ) Net income (loss) 7,942 7,942 Assets $ 220,152 $ 715,575 $ 416,490 $ 8,169 $ 1,360,386 Expenditures for long-lived assets $ 11,926 $ 5,352 $ 23,077 $ 3,465 $ 43,820 December 31, 2015 Net sales $ 261,837 $ 77,183 $ 328,260 $ — $ 667,280 Depreciation and amortization 11,496 11,295 21,472 219 44,482 Income from operations 26,310 (3,718 ) 31,700 (27,495 ) 26,797 Interest expense 29,899 29,899 Income tax (benefit) expense (10,518 ) (10,518 ) Net income (loss) (7,431 ) (7,431 ) Assets $ 215,163 $ 743,191 $ 417,853 $ 17,319 $ 1,393,526 Expenditures for long-lived assets $ 15,111 $ 728 $ 21,341 $ 1,373 $ 38,553 December 31, 2014 Net sales $ 278,026 $ 33,351 $ 177,224 $ — $ 488,601 Depreciation and amortization 12,000 1,160 9,070 (84 ) 22,146 Income from operations 31,872 1,231 15,732 (21,148 ) 27,687 Interest Expense 10,895 10,895 Income tax (benefit) expense 5,786 5,786 Net income (loss) 8,217 8,217 Assets $ 214,291 $ 17,196 $ 444,548 $ 36,678 $ 712,713 Expenditures for long- lived assets $ 10,941 $ 673 $ 10,947 $ 5,041 $ 27,602 The vast majority of the acquisition related costs for the PEP Acquisition and Caprock acquisition in 2015, and the Autocam acquisition and the other three acquisitions in 2014 are reported under Corporate and Consolidations. These costs impacted income from operations at Corporate by $10.9 million and $9.8 million for the years ended December 31, 2015 and 2014, respectively. Beginning October 20, 2015 and September 1, 2014, the Precision Engineered Products Group and Autocam Precision Components Group, respectively, include the results of the acquired PEP and Autocam businesses. Since the date of the PEP Acquisition, 2015 sales revenue of $40.7 million and net loss of $(2.6) million (including the $4.3 million for the one-time increase in cost of goods sold for inventory step-up, and $5.2 for the amortization of backlog intangible) has been included in this segment. During 2014 and since the date of the Autocam acquisition, sales revenue of $80.8 million and net income of $3.7 million (including the $1.2 million for the one-time increase in cost of goods sold for inventory step-up) has been included in this segment. December 31, 2016 December 31, 2015 December 31, 2014 Net Sales Property, Net Sales Property, Net Sales Property, United States $ 456,102 $ 176,632 $ 326,747 $ 183,226 $ 204,360 $ 129,232 Europe 172,895 78,664 170,921 77,147 167,665 82,783 Asia 102,853 33,867 86,564 35,345 58,470 32,848 Canada 10,980 — 9,759 — 8,657 — Mexico 54,390 6,308 39,118 2,971 25,900 2,637 S. America 36,268 27,482 34,171 20,279 23,549 30,942 All foreign countries 377,386 146,321 340,533 135,742 284,241 149,210 Total $ 833,488 $ 322,953 $ 667,280 $ 318,968 $ 488,601 $ 278,442 Due to the large number of countries in which we sell our products, sales to external customers and long-lived assets utilized by us are reported in the above geographical regions.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	13) Income Taxes Income (loss) before provision (benefit) for income taxes for the years ended December 31, 2016, 2015 and 2014 was as follows: Year ended December 31, 2016 2015 2014 Income (loss) before provision (benefit) for income taxes: United States $ (32,498 ) $ (42,450 ) $ (9,341 ) Foreign 25,189 19,500 22,513 Total $ (7,309 ) $ (22,950 ) $ 13,172 The loss of $32.5 million from domestic operations during 2016, was primarily driven from an increase in interest expense due to higher debt levels associated with the 2015 PEP acquisition. The loss of $42.5 million from domestic operations during 2015, was primarily driven from acquisition related charges (included in selling, general and administrative of $11.7 million, cost of products sold $7.5 million and write-off of debt issuance costs of $18.7 million) of which approximately $3.8 million was non-deductible as these costs were directly facilitative to the acquisitions. The loss of $9.3 million from domestic operations during 2014, was primarily driven from acquisition related charges of $14.8 million (included in selling, general and administrative, cost of products sold, and interest expense) of which approximately $6.0 million were non-deductible as these costs were directly facilitative to the acquisitions. Total income tax expense (benefit) for the years ended December 31, 2016, 2015, and 2014 was as follows: Year ended December 31, 2016 2015 2014 Current: U.S. Federal $ — $ — $ — State 1,017 420 37 Foreign 6,968 5,940 7,082 Total current expense $ 7,985 $ 6,360 $ 7,119 Deferred: U.S. Federal $ (11,033 ) $ (13,391 ) $ 1,625 State (6,440 ) (1,869 ) (382 ) U.S. deferred tax valuation allowance 1,882 — (1,434 ) Foreign (1,707 ) (1,618 ) (1,142 ) Total deferred expense (benefit) (17,298 ) (16,878 ) (1,333 ) Total expense (benefit) (a) $ (9,313 ) $ (10,518 ) $ 5,786 (a) During the year ended December 31, 2016, the Company identified certain prior period tax expense (benefit) errors. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments in 2016, resulting in $998 of tax benefit being recognized in 2016 that should have been recognized in 2015. A reconciliation of income taxes based on the U.S. federal statutory rate of 34% for each of the years ended December 31, 2016, 2015 and 2014 is summarized as follows: Year ended December 31, 2016 2015 2014 Income taxes at the federal statutory rate $ (2,490 ) $ (7,803 ) $ 4,478 Decrease in U.S. valuation allowance 1,882 — (1,434 ) Foreign tax credit (additions) expiration (2,545 ) (1,343 ) 2,736 State taxes, net of federal taxes (1,558 ) (1,592 ) (362 ) Non-U.S. earnings taxed at different rates (2,938 ) (2,308 ) (1,714 ) Non-deductible mergers and acquisition costs — 1,299 1,971 R&D Tax credit (282 ) (623 ) (529 ) Change in uncertain tax positions (994 ) — — Other permanent differences, net (388 ) 1,852 640 $ (9,313 ) $ (10,518 ) $ 5,786 The 2016 effective tax rate of 127% reflects the impact of foreign earnings taxed at lower rates. The higher 2016 effective tax rate was driven by a unique mix of lower U.S. losses with higher earnings attributed to foreign subsidiaries. Excluding the effect of foreign earnings, the 2016 effective tax rate would have been 45%. The 2015 effective tax rate of 46% primarily reflects the impact of foreign earnings being taxed at lower rates. The 2014 effective tax rate of 44% reflects the impact of two items related to the merger and acquisition activity in 2014, including: (1) $2.0 million for non-deductible third party merger and acquisition costs, as these costs were directly facilitative to the acquisitions; and (2) $1.3 million for the expiration of foreign tax credits that could not be utilized during 2014 because of the merger related acquisition costs as discussed below. In addition, the rate reflects an offset to the items above for the impact of foreign earnings taxed at lower rates of $1.7 million. The tax effects of the temporary differences as of December 31, 2016, 2015 and 2014 are as follows: December 31, 2016 2015 2014 Deferred income tax liabilities: Tax in excess of book depreciation $ 43,336 $ 42,345 $ 35,411 Goodwill 1,580 1,554 1,949 Intangible assets 86,492 91,947 15,944 Other deferred tax liabilities 1,771 897 1,924 Gross deferred income tax liabilities 133,179 136,743 55,228 Deferred income tax assets: Goodwill 1,165 1,666 2,411 Inventories 960 4,490 2,035 Pension/Personnel accruals 1,602 2,778 3,029 Net operating loss carry forwards 10,296 8,313 1,196 Foreign tax credits 5,759 3,242 290 Guarantee claim deduction 414 1,141 1,141 Credit carry forwards 4,581 4,958 1,853 Accruals and reserves 1,741 — — Other deferred tax assets 11,160 2,510 1,926 Gross deferred income tax assets 37,678 29,098 13,881 Valuation allowance on deferred tax assets (4,090 ) (2,376 ) — Net deferred income tax assets 33,588 26,722 13,881 Net deferred income tax assets (liabilities) (b) $ (99,591 ) $ (110,021 ) $ (41,347 ) (b) During the year ended December 31, 2016, the Company identified certain prior period errors related to the initial recognition of goodwill and deferred taxes in purchase accounting (see Note 10) as well as prior period errors in the 2015 tax provision as further described above. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors in 2016. The impact of these purchase accounting and tax provision errors resulted in an understatement (overstatement) of net deferred income tax liabilities of $4,469 and $(1,444) as of December 31, 2015 and 2014. With the PEP Acquisition during 2015, we assumed $87.6 million in net deferred tax liabilities primarily related to book and tax basis difference in fixed assets and intangibles (excluding goodwill). With the Autocam acquisition during 2014, we assumed $43.8 million in net deferred tax liabilities primarily related to book and tax basis differences in fixed assets and intangibles (excluding goodwill). As realization of certain deferred tax assets is not assured, management believes it is more likely than not that those net deferred tax assets will be realized. However, the amount of the deferred tax assets considered realizable could be reduced based on changing conditions. Below is a summary of the activity in the total valuation allowances during the years ended December 31, 2016, 2015 and 2014: Balance at Additions Recoveries Balance at 2016 $ 2,376 $ 1,882 $ (168 ) $ 4,090 2015 $ — $ 2,376 $ — $ 2,376 2014 $ 1,434 $ — $ (1,434 ) $ — During 2016, the valuation allowance increased by approximately $1.7 million, consisting of a $1.9 million increase due to the uncertainty of realizing certain state net operating loss carryforwards and a decrease of $0.2 million. The decrease reflects the Company’s expectation that it is more likely than not that it will generate future taxable income to utilize this amount of net deferred tax assets. During 2015, the valuation allowance increased by approximately $2.4 million, consisting solely of an increase due to the uncertainty of realizing certain local tax credits of a foreign subsidiary. During 2014, the valuation allowance of $1.4 million on our previously recognized foreign tax credits was reduced by the full $1.4 million for credits which expired as of December 31, 2014. In addition to the foreign tax credits with the full valuation allowance, $1.3 million in foreign tax credits expired unused as of December 31, 2014. These foreign tax credits were not utilized during 2014, as management expected, due to the large amount of non-deductible mergers and acquisition costs incurred related to the four acquisitions completed in 2014. The remaining foreign tax credits, net operating loss and credit carry forwards are expected to be utilized before expiration. We record a valuation allowance when it is “more likely than not” that some portion or all of the deferred income tax assets will not be realized. In reaching this determination, we consider the future reversals of taxable temporary differences, future taxable income, exclusive of taxable temporary differences and carry forwards, taxable income in prior carryback years and tax planning strategies. Unremitted earnings of subsidiaries outside the U.S. are considered to be reinvested indefinitely at December 31, 2016. It is not practicable to determine the deferred tax liability for temporary differences related to those unremitted earnings. There has been no change in our long term international expansion plans as of December 31, 2016, and our intent and ability is to indefinitely reinvest our foreign earnings. We base this assertion on two factors. The first factor is our intention to invest in foreign countries that are strategically important to our Precision Bearing Components, Precision Engineered Products and Autocam Precision Components Groups. With the acquisitions completed in 2015 and 2014, we have significantly expanded our international base of operations adding subsidiaries in Mexico, Bosnia and Herzegovina, Brazil, Poland, France and China which will require more foreign investment. Second, we have sufficient access to funds in the U.S. through projected free cash flows and the availability of our U.S. credit facilities to fund currently anticipated domestic operational and investment needs. A reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest and penalties for the years ended December 31, 2016, 2015 and 2014 is as follows: 2016 2015 2014 Beginning balance $ 5,724 $ 3,834 $ 873 Additions for tax positions of prior years 179 2,516 3,589 Reductions for tax positions of prior years (1,162 ) (626 ) (628 ) Ending balance $ 4,741 $ 5,724 $ 3,834 As of December 31, 2016, the $4.7 million of unrecognized tax benefits would, if recognized, impact our effective tax rate. The addition for tax positions of prior years was added as part of the purchase price allocation of PEP in 2015 of $2.2 million and Autocam in 2014 of $2.8 million and was included in the fair value of assets acquired and liabilities assumed. (See Note 2 of Notes to Consolidated Financial Statements.) Interest and penalties related to federal, state, and foreign income tax matters are recorded as a component of the provision for income taxes in our Statements of Operations. During 2016, we released $65 thousand of previously accrued foreign interest and accrued $0.2 million in U.S. interest. During 2015, we accrued $30 thousand in foreign interest and $0.3 million in U.S. interest. During 2014, we accrued $31 thousand in foreign interest and $17 thousand in U.S. interest. As of December 31, 2016, the total amount accrued for interest and penalties was $ 1.1 million. We or our subsidiaries file income tax returns in the U.S. federal jurisdiction, and in various states and foreign jurisdictions. With few exceptions, we are no longer subject to federal, state and local income tax examinations by tax authorities for years before 2013. We are no longer subject to non-U.S. income tax examinations within various European Union countries for years before 2011. We do not foresee any significant changes to our unrecognized tax benefits within the next twelve months. In November 2015, the FASB issued ASU 2015-17, intended to improve how deferred taxes are classified on organizations’ balance sheets. The guidance eliminates the requirement for organizations to present deferred tax liabilities and assets as current and noncurrent in a classified balance sheet. Instead, organizations are required to classify all deferred tax assets and liabilities as noncurrent. The new standard is effective for the Company in the first quarter of 2017, and may be applied retrospectively or prospectively. The Company has elected to adopt the standard early, beginning in the first quarter of 2016, and applies prospectively. The adoption of the new accounting rules does not have a material effect on the Company’s financial condition, results of operations or cash flows.

Reconciliation of Net Income (L

Reconciliation of Net Income (Loss) Per Share	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Reconciliation of Net Income (Loss) Per Share	14) Reconciliation of Net Income (Loss) Per Share Year ended December 31, 2016 2015 2014 Net income (loss) $ 7,942 $ (7,431 ) $ 8,217 Weighted average shares outstanding 27,016 21,181 17,887 Effect of dilutive stock options 138 — 366 Diluted shares outstanding 27,154 21,181 18,253 Basic net income (loss) per share $ 0.29 $ (0.35 ) $ 0.46 Diluted net income (loss) per share $ 0.29 $ (0.35 ) $ 0.45 Excluded from the dilutive shares outstanding for the year ended December 31, 2016 were 163,200 of anti-dilutive options, which had per share exercise prices ranging from of $19.63 to $25.16. Given the net loss for the year ended December 31, 2015, all options are considered anti-dilutive. Excluded from the dilutive shares outstanding for the year ended December 31, 2014 were 98,000 of anti-dilutive options, which had per share exercise prices ranging from of $19.63 to $22.49.

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	15) Commitments and Contingencies We have operating lease commitments for machinery, office equipment, vehicles, manufacturing and office space which expire on varying dates. Rent expense for 2016, 2015 and 2014 was $8.6 million, $5.8 million, and $4.5 million, respectively. The following is a schedule by year of future minimum lease payments as of December 31, 2016 under operating leases that have initial or remaining non-cancelable lease terms in excess of one year. Year ending December 31, 2017 $ 7,824 2018 6,830 2019 5,785 2020 4,882 2021 2,802 Thereafter 3,149 Total minimum lease payments $ 31,272 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 plan to defend our interests vigorously. While we believe a loss is not probable we estimate the range of possible loss related to this assessment is from $0 to $6.0 million. No amount has been accrued at December 31, 2016 for this matter. 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. Management believes the indemnification would include amounts owed for the tax, interest and penalties related to the Brazil ICMS 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. The procedures performed include reviewing attorney and plaintiff correspondence, reviewing any filings made and discussing the facts of the case with local management and legal counsel. We have not recognized any loss contingencies as December 31, 2016 and 2015.

Investment in Non-Consolidated

Investment in Non-Consolidated Joint Venture	12 Months Ended
	Dec. 31, 2016
Equity Method Investments and Joint Ventures [Abstract]
Investment in Non-Consolidated Joint Venture	16) Investment in Non-Consolidated Joint Venture As part of the Autocam acquisition, we acquired 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 the city of Wuxi, China. The JV is jointly controlled and managed and is being accounted for under the equity method. Below are the components of our JV investment balance and activity for the years ended December 31, 2016, 2015 and 2014: Balance as of August 29, 2014 $ 35,595 Dividends received (2,538 ) Our share of cumulative earnings 1,646 Accretion of basis difference from purchase accounting (372 ) Balance as of December 31, 2014 $ 34,331 Capital contributions 1,999 Dividends received (2,868 ) Our share of cumulative earnings 5,440 Accretion of basis difference from purchase accounting (440 ) Balance as of December 31, 2015 $ 38,462 Our share of cumulative earnings 6,427 Dividends declared and paid by joint venture (3,706 ) Accretion of basis difference from purchase accounting (489 ) Balance as of December 31, 2016 $ 40,694 Set forth below is summarized balance sheet information for the JV: December 31, December 31, 2016 2015 Current assets $ 31,295 $ 24,663 Non-current assets 22,522 22,847 Total assets $ 53,817 $ 47,510 Current liabilities $ 13,549 $ 11,171 Total liabilities $ 13,549 $ 11,171 Dividends of $3.7 million were declared for year ended December 31, 2015 and paid by the JV during the year ended December 31, 2016. We had sales to the JV of $0.1 million for the year ended December 31, 2016. Amounts due to us from the JV were $0.1 million as of December 31, 2016. The JV had net sales in 2016 of $65.7 million and net income of $13.1 million. Dividends of $2.8 million were declared for year ended December 31, 2014 and paid by the JV during the year ended December 31, 2015. Our 49% ownership interest in this amount is net of a 10% withholding tax levied by the Chinese government. We had sales to the JV of $0.1 million for the year ended December 31, 2015. Amounts due to us from the JV were $0.2 million of December 31, 2015. The JV had net sales in 2015 of $55.4 million and net income of $11.1 million. No dividends were declared by the JV for the four months ended December 31, 2014. We had sales to the JV of $36 thousand during the four months ended December 31, 2014. Amounts due to us from JV were $0.2 million as of December 31, 2014. The JV had net sales in 2014 of $50.5 million and net income of $9.0 million.

Quarterly Results of Operations

Quarterly Results of Operations (Unaudited)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (Unaudited)	17) Quarterly Results of Operations (Unaudited) The following summarizes the unaudited quarterly results of operations for the years ended December 31, 2016 and 2015. Year ended December 31, 2016 March 31 June 30 Sept. 30 Dec. 31 Net sales $ 212,226 $ 214,272 $ 204,961 $ 202,029 Income from operations $ 11,874 $ 16,703 $ 18,727 $ 12,096 Net income (a) $ (1,299 ) $ 2,031 $ 4,147 $ 3,063 Comprehensive income (loss)(a) $ 4,418 $ (973 ) $ 8,740 $ (10,212 ) Basic net income per share $ (0.05 ) $ 0.08 $ 0.15 $ 0.11 Diluted net income per share $ (0.05 ) $ 0.07 $ 0.15 $ 0.11 Weighted average shares outstanding: Basic number of shares 26,869 27,024 27,159 27,241 Effect of dilutive stock options — 163 163 180 Diluted number of shares 26,869 27,187 27,322 27,421 Year ended December 31, 2015 March 31 June 30 Sept. 30 Dec. 31 Net sales $ 163,746 $ 164,856 $ 154,824 $ 183,854 Income from operations $ 13,934 $ 13,589 $ 10,122 $ (10,848 ) Net income (a) $ 6,001 $ 6,953 $ 4,630 $ (25,015 ) Comprehensive income (loss)(a) $ (11,856 ) $ 10,955 $ (2,121 ) $ (28,929 ) Basic net income per share $ 0.32 $ 0.36 $ 0.17 $ (0.93 ) Diluted net income per share $ 0.31 $ 0.36 $ 0.17 $ (0.93 ) Weighted average shares outstanding: Basic number of shares 18,996 19,215 26,839 26,840 Effect of dilutive stock options 384 367 328 — Diluted number of shares 19,380 19,582 27,167 26,840 (a) During the fourth quarter ended December 31, 2016, the Company identified certain prior period tax errors. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments in 2016, resulting in $998 of tax benefit being recognized in the fourth quarter of 2016 that should have been recognized in the fourth quarter of 2015. During 2016 the Company identified certain prior period comprehensive income errors which primarily related to the accounting for deferred taxes related to unrealized gains (losses) of the fair value of derivatives and the accounting for the foreign currency translation of goodwill (see Note 10). The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments. The impact of these errors on other comprehensive income resulted in an increase (decrease) to comprehensive income of $582, $(517), $(2,542), $3,104, $91, $166, $345, $(955) for the quarters ended March 31, 2016, June 30, 2016, September 31, 2016, December 31, 2016, March 31, 2015, June 30, 2015, September 30, 2015 and December 31, 2015. The year ended December 31, 2016 fully reflects the acquisition activity from 2015 and 2014. Line items such as Selling, general and administrative costs, Depreciation and amortization, Restructuring and impairment charges, excluding goodwill impairment, and Interest expense, all increased as a result of increased bases in assets and higher debt and employee levels. There were no acquisitions made during 2016. The fourth quarter of 2015 was impacted by merger and acquisition related costs of $18.7 million pre-tax, and $11.6 million after-tax primarily related to the PEP Acquisition. Additionally, the fourth quarter was negatively impacted by $18.7 million in pre-tax costs and $12.0 million in after-tax costs incurred related to writing-off debt issuance costs to our former lenders related to the new debt entered into for the PEP Acquisition.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Accumulated Other Comprehensive Income	18) Accumulated Other Comprehensive Income The majority of our Accumulated other comprehensive income balance relates to foreign currency translation of our foreign subsidiary balances. During the year ended December 31, 2016, we had other comprehensive loss of $9.0 million due to foreign currency translations and $3.0 million loss due to change in fair value of the interest rate swap. The interest rate swap amounts were reclassified out of accumulated other comprehensive income during the three months ended September 30, 2016. Amounts were reclassified due to the forecasted transactions no longer being probable. During the year ended December 31, 2015, we had other comprehensive loss of $21.9 million due to foreign currency translations and a $2.6 million loss due to change in fair value of interest rate hedge. During the year ended December 31, 2014, we had other comprehensive loss of $17.7 million due to foreign currency translations and a $0.4 million loss due to change in fair value of interest rate hedge.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	19) 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 Note 1 of the Notes to Consolidated Financial Statements. 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 September 30, 2016, the carrying values of all of these financial instruments, except the long-term debt with fixed interest rates, 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. The fair value of our fixed-rate long-term debt is estimated based on the Bloomberg algorithm, which takes into account similar sized and industry debt (a Level 2 category fair value measurement). As of December 31, 2016, the fair value of our fixed-rate debt was $265.3 million, and $260.4 net of debt issuance costs. Recurring Fair Value Measurements The following table summarizes the assets and liabilities measured at fair value on a recurring basis for our interest rate swap derivative financial instrument: 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 an interest rate swap in which we agree to exchange the difference between fixed and variable interest amounts calculated by reference to an agreed upon notional principal amount. Effective December 16, 2014, we entered into a $150 million swap that went into effect on December 29, 2015 (one year delayed start), at which time our rate was locked at 6.966% until December 31, 2018. As of December 31, 2016 and as a result of post-effective amendments to the derivative, our interest rate is now fixed at 6.466% through December 31, 2018. Prior to December 16, 2014, we did not have any existing interest rate hedges. The hedge instrument will be 100% effective and as such the mark to market gains or losses on this hedge will be included in accumulated other comprehensive income (loss), to the extent effective, and reclassified into interest expense over the term of the related debt instruments. The tables below summarizing the fair value measurement of this swap valued on a recurring basis on a gross basis: Fair Value Measurements at December 31, 2016 Description December 31, Quoted Prices in Significant Other Significant 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 ) $ — Fair Value Measurements at December 31, 2015 Description December 31, Quoted Prices in Significant Other Significant Derivative asset—current $ 388 $ — $ 388 $ — Derivative asset—noncurrent 368 — 368 — Derivative liability—current (2,098 ) — (2,098 ) — Derivative liability—noncurrent (1,673 ) — (1,673 ) — $ (3,015 ) $ — $ (3,015 ) $ — 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. Our $150 million interest rate swap went into effect on December 29, 2015, at which time our interest rate was effectively 6.966%. The objective of the hedge was to eliminate the variability of cash flows in interest payments on the first $150 million of variable interest rate debt (the Term Loan B). The variable rate benchmark was the three month LIBOR rate for both the Term Loan B and the interest rate swap. The changes in cash flows of the interest rate swap were expected to exactly offset the changes in cash flows of the Term Loan B. The hedged risk was the interest rate risk exposure to changes in the interest payments, attributable to changes in the benchmark three month LIBOR interest rates (subject to a 1.0% LIBOR index floor) from December 29, 2015 through December 31, 2018. As disclosed in Note 7 of the Notes to Consolidated Financial Statements, Long-Term Debt, the LIBOR floor index was lowered to 0.75% on September 30, 2016, and our intent regarding future interest rate resets changed. Three-month LIBOR was above the floor, and it was more economical to use one month LIBOR. Therefore, our intensions called into question the probability of the amounts deferred in accumulated other comprehensive income (“AOCI”) as the forested transactions would not be probable. As a result, we chose to discontinue hedge accounting, reclassified all amounts in AOCI to earnings, and began to account for the interest rate swap on a mark-to-market basis. The change in reporting will have no impact on our reported cash flows, although future results of operations on a generally accepted accounting principles basis will be affected by the potential volatility of mark-to-market gains and losses which fluctuate with changes in interest rates. 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 Consolidated Balance Sheet included within other current assets and other non-current assets and 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 $2.9 million as of December 31, 2016. We do not have any cash collateral due under such agreements. As of December 31, 2016, we reported no gains or losses in AOCI related to the interest rate swaps. In connection with lowering the LIBOR index floor from 1.0% to 0.75% within the $150 million interest rate swap, we received a $0.3 million payment that reduced the net liability position on the $150 million interest rate swap. The payment was reported as Derivative payments (receipts) on interest rate swap on the Condensed Consolidated Balance Sheet. Additionally, during 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 $1.4 million of net hedging losses on the interest rate swap in the interest expense line on the Consolidated Statements of Operations. We recognized $0.6 million of interest rate swap settlements for the third quarter of 2016 in Derivative payments (receipts) on interest rate swap line on the Consolidated Statement of Operations. If there are no changes in the interest rates for the next twelve months, we expect $1.8 million in cash payments related to the interest rates swap. See the following “Derivatives’ Hedging Relationships” section of this Note for more information regarding the impact of the interest rate swaps on our Condensed Consolidated Financial Statements. Derivatives’ Hedging Relationships Amount recognized in Other Comprehensive Income (effective portion) Location of gain/(loss) Net Income (effective Pre-tax amount of gain/(loss) AOCI in Net Income Derivatives’ Cash Flow Hedging Relationships December 31, December 31, 2015 December 31, December 31, Forward starting interest rate swap contract $ — $ (3,015 ) Interest Expense $ (1,393 ) $ — $ — $ (3,015 ) $ (1,393 ) $ — As of December 31, 2016, we did not own derivative instruments that were classified as fair value hedges or trading securities. In addition, as of December 31, 2016, we did not own derivative instruments containing credit risk contingencies.

Equity Offering

Equity Offering	12 Months Ended
	Dec. 31, 2016
Text Block [Abstract]
Equity Offering	20) Equity Offering On July 1, 2015, we closed an underwritten registered public offering of common stock offered pursuant to a shelf registration statement on Form S-3 that was previously filed with, and declared effective by, the Securities Exchange Commission. The total number of shares of common stock sold was 7,590,000 at a public offering price of $24.00 per share. All of the shares in the offering were sold by us. Our net proceeds from the offering, after deducting underwriting discounts and commissions and offering expenses, were approximately $173.1 million. Of these proceeds, $148.7 million was used for repayment of principal and interest on our existing debt.

Summary of Significant Accoun28

Summary of Significant Accounting Policies and Practices (Policies)	12 Months Ended
	Dec. 31, 2016
Accounting Policies [Abstract]
Description of Business	a) Description of Business NN, Inc. is 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, Western Europe, Eastern Europe, South America and Asia. As used in this Annual Report on Form 10-K, the terms “NN,” the “Company,” “we,” “our,” or “us” mean NN, Inc. and its subsidiaries. Included in the Selling, general and administrative expense line item in the Consolidated Statement of Operations during the years ended December 31, 2015 and 2014 are out of period adjustments in the amounts of approximately $0.2 million, respectively, to correct compensation expense recorded with respect to share based awards previously granted to executives who, either at the time of such grant or during the applicable vesting period, were eligible to retire from the Company, upon which the vesting of all or a portion of these awards would be accelerated. All dollar amounts presented in tables that follow are in thousands (except for share data) unless otherwise indicated.
Cash	b) Cash We consider all highly liquid investments with an original maturity of three months or less as cash equivalents.
Inventories	c) Inventories Inventories are stated at the lower of cost or net realizable value. Cost is determined using the average cost method which approximates the first in first out method. Our policy is to expense abnormal amounts of idle facility expense, freight, handling cost, and waste included in cost of products sold. In addition, we allocate fixed production overheads based on the normal production capacity of our facilities. Inventory valuations were developed using normalized production capacities for each of our manufacturing locations and the costs from excess capacity or under-utilization of fixed production overheads were expensed in the period incurred and are not included as a component of inventory valuation. Inventories also include tools, molds and dies in progress that we are producing and will ultimately sell to our customers. This activity is principally related to our Autocam Precision Components and Precision Engineered Products Groups. These inventories are carried at the lower of cost or net realizable value.
Property, Plant and Equipment	d) Property, Plant and Equipment Property, plant and equipment are stated at cost less accumulated depreciation. Assets to be disposed of are stated at lower of depreciated cost or fair market value less estimated selling costs. Expenditures for maintenance and repairs are charged to expense as incurred. Major renewals and betterments are capitalized. When a property item is retired, its cost and related accumulated depreciation are removed from the property accounts and any gain or loss is recorded in the consolidated Statements of Operations and comprehensive income. We review the carrying values of long-lived assets for impairment whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Property, plant and equipment includes tools, molds and dies principally used in our Autocam Precision Components and Precision Engineered Products Groups that are our property. Depreciation is provided on the straight-line method over the estimated useful lives of the depreciable assets for financial reporting purposes. For leasehold improvements and buildings under capital lease, we depreciate these over the shorter of useful lives or the lease term. In the event we abandon and cease to use certain property, plant, and equipment, depreciation estimates are revised and, in most cases, depreciation expense will be accelerated to reflect the shortened useful life of the asset.
Revenue Recognition	e) Revenue Recognition We recognize revenues based on the stated shipping terms with customers when these terms are satisfied and the risks of ownership are transferred to the customers. We have an inventory management program for certain Precision Bearing Components Group customers whereby revenue is recognized when products are used by customers from consigned stock, rather than at the time of shipment. Under both circumstances, revenue is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the sellers’ price is fixed and determinable and collectability is reasonably assured.
Accounts Receivable	f) Accounts Receivable Accounts receivable are recorded upon recognition of a sale of goods and ownership and risk of loss is assumed by the customer. Substantially all of our accounts receivable are due primarily from the core served markets. In establishing allowances for doubtful accounts, we perform credit evaluations of our customers, considering numerous inputs when available including the customers’ financial position, past payment history, relevant industry trends, cash flows, management capability, historical loss experience and economic conditions and prospects. Accounts receivable are written off or allowances established when considered to be uncollectible or at risk of being uncollectible, respectively.
Income Taxes	g) Income Taxes Income taxes are accounted for under the asset and liability method. Deferred tax assets and liabilities are recognized for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases and operating loss and tax credit carry forwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income in the period that includes the enactment date. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than not that a tax benefit will not be realized. Provision has not been made for income taxes on unremitted earnings of foreign subsidiaries as these earnings are deemed to be permanently reinvested. We recognize income tax positions that meet the more likely than not threshold and accrue interest and potential penalties related to unrecognized income tax positions which are recorded as a component of the provision (benefit) for income taxes.
Net Income Per Common Share	h) Net Income Per Common Share Basic income per share reflects reported earnings divided by the weighted average number of common shares outstanding. Diluted income per share include the effect of dilutive stock options and the respective tax benefits, unless inclusion would not be dilutive.
Share Based Compensation	i) Share Based Compensation The cost of stock options, stock awards and performance based stock units are expensed as compensation expense over the vesting periods based on the fair value at the grant date. (See Note 9 of the Notes to the Consolidated Financial Statements) We use the Black Scholes financial pricing model for our stock options, and a Monte Carlo simulation for the performance based stock units to determine the fair value as these awards as they are not traded in open markets. We account for stock awards by recognizing compensation expense ratably over the vesting period as specified in the award. Compensation expense to be recognized is based on the stock price at date of grant.
Principles of Consolidation	j) Principles of Consolidation Our consolidated financial statements include the accounts of NN, Inc. and its subsidiaries. All of our subsidiaries are 100% owned (except for RFK which we own 99.7% and our Chinese joint venture noted below) and all are included in the consolidated financial statements for the years ended December 31, 2016, 2015 and 2014. All significant intercompany profits, transactions, and balances have been eliminated in consolidation. With the acquisition of Autocam Corporation (“Autocam”) during 2014, we acquired a 49% interest in a Chinese joint venture. This joint venture is not consolidated within the financial statements of NN, Inc. and is accounted for under the equity method (see Note 16 of the Notes to the Consolidated Financial Statements).
Foreign Currency Translation	k) Foreign Currency Translation Assets and liabilities of our foreign subsidiaries are translated at current exchange rates, while revenue, costs and expenses are translated at average rates prevailing during each reporting period. Translation adjustments arising from the translation of foreign subsidiary financial statements are reported as a component of other comprehensive income and accumulated other comprehensive income within stockholders’ equity. In addition, transactions denominated in foreign currencies, including intercompany transactions, are initially recorded at the current exchange rate at the date of the transaction. The balances are adjusted to the current exchange rate as of each balance sheet date and as of the date when the transaction is consummated. Transaction gains or losses, excluding intercompany loan transactions, are expensed in either cost of products sold or selling, general and administrative lines in the Consolidated Statements of Operations and Comprehensive Income (Loss) as incurred and were immaterial to the years ended December 31, 2016, 2015 and 2014. Transaction gains or losses on intercompany loan transactions are recognized in the other income, net line in the Consolidated Statements of Operations and Comprehensive Income (Loss) as incurred.
Goodwill and Other Indefinite Lived Intangible Assets	l) Goodwill and Other Indefinite Lived Intangible Assets We recognize the excess of the purchase price of an acquired entity over the fair value of the net identifiable assets as goodwill. Goodwill is tested for impairment on an annual basis as of October 1 and between annual tests if a triggering event occurs. The impairment procedures are performed at the reporting unit level for the reporting units that have goodwill. In September 2011, the FASB issued a revised accounting standard, intended to reduce the cost and complexity of the annual goodwill impairment test by providing entities an option to perform a “qualitative” assessment to determine whether further impairment testing is necessary. Specifically, an entity has the option to first assess qualitative factors to determine whether it is necessary to perform the current two-step test. If an entity believes, as a result of its qualitative assessment, that it is more-likely-than-not that the fair value of a reporting unit is less than its carrying amount, the quantitative impairment test is required. Otherwise, no further testing is required. For the years ended, December 31, 2016 and 2015, we determined it was more appropriate to perform a full step 1 goodwill test. The decision to perform a qualitative assessment or a complete step 1 analysis is an annual decision made by management. Based on the results of the step 1 analysis fair value of the reporting units exceeded the carrying value of the reporting units at December 31, 2016 and 2015. If the qualitative assessment indicates it is more likely than not that the fair value is less than the carrying value, GAAP prescribes a two-step process for testing for goodwill impairments. The first step is to determine if the carrying value of the reporting unit with goodwill is less than the related fair value of the reporting unit. We consider three main approaches to value (cost, market and income) the fair value of the reporting unit and market based multiples of earning and sales methods obtained from a grouping of comparable publicly trading companies. We believe this methodology of valuation is consistent with how market participants would value reporting units. The discount rate and market based multiples used are specifically developed for the unit tested regarding the level of risk and end markets served. Even though we do use other observable inputs (Level 2 inputs) the calculation of fair value for goodwill would be most consistent with Level 3 inputs. If the carrying value of the reporting unit including goodwill is less than fair value of the reporting unit, the goodwill is not considered impaired. If the carrying value is greater than fair value then the potential for impairment of goodwill exists. The potential impairment is determined by allocating the fair value of the reporting unit among the assets and liabilities based on a purchase price allocation methodology as if the reporting unit was acquired in a business combination. The fair value of the goodwill is implied from this allocation and compared to the carrying value with an impairment loss recognized if the carrying value is greater than the implied fair value. We base our fair value estimates, in large part, on management business plans and projected financial information which are subject to a high degree of management judgment and complexity. Actual results may differ from projections and the differences may be material.
Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of	m) Impairment of Long-Lived Assets and Long-Lived Assets to Be Disposed Of Long-lived tangible and intangible assets subject to amortization are tested for recoverability when changes in circumstances indicate the carrying value of these assets may not be recoverable. A test for recoverability is also performed when management has committed to a plan to dispose of a reporting unit or asset group. Assets to be held and used are tested for recoverability when indications of impairment are evident. Recoverability of a long-lived tangible and intangible asset is evaluated by comparing its carrying value to the future estimated undiscounted cash flows expected to be generated by the asset or asset group. If the asset is not recoverable the asset is considered impaired and adjusted to fair value which is then depreciated/amortized over its remaining useful life. Assets to be disposed of are carried at the lesser of carrying value or fair value less costs of disposal.
Use of Estimates in the Preparation of Financial Statements	n) Use of Estimates in the Preparation of Financial Statements The preparation of financial statements in conformity with accounting principles generally accepted in the United States requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Fair Value Measurements	o) Fair Value Measurements 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.
Recently Issued Accounting Standards	p) Recently Issued Accounting Standards In 2014, the Financial Accounting Standards Board (FASB) and International Accounting Standards Board (IASB) issued the joint revenue recognition standard. Since its release, there have been multiple proposed and finalized amendments made to the revenue recognition standard. The revenue recognition standard is effective for public companies beginning January 1, 2018 with full retrospective or modified retrospective adoption permitted. This standard will change current revenue practices, processes, systems, controls, and disclosures and take time and resources to adopt. 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 those contracts are performance obligations. The revenue recognition standard may impact the timing of when revenue received under these performance obligations is recognized. We are in the scoping, performing contract analysis and the development phase of understanding the likely impacts of the standard change that can affect key processes, systems and controls. On February 25, 2016, the FASB issued ASU 2016-02, Leases (“ASU 2016-02”). ASU 2016-02 creates Topic 842, Leases, in the FASB Accounting Standards Codification (“FASB ASC”) and supersedes FASB 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 leasing 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. As noted in Item 2. Properties, we list various leased locations. We have also carried out inquiries within segment locations compiling information on operating and capital leases. We are currently evaluating the impacts of the lease accounting standards regarding these and other leases identified on our financial position or results of operations and related disclosures. On August 27, 2014, the FASB issued ASU 2014-15, Presentation of Financial Statements – Going Concern, (“ASU 2014-15”) which provides guidance on determining when and how to disclose going-concern uncertainties in the financial statements. The new standard requires management to perform interim and annual assessments of an entity’s ability to continue as a going concern within one year of the date the financial statements are issued. An entity must provide certain disclosures if “conditions or events raise substantial doubt about the entity’s ability to continue as a going concern.” ASU 2014-15 applies to all entities and is effective for annual periods ending after December 15, 2016, and interim periods thereafter, with early adoption permitted. We adopted ASU 2014-15 beginning December 31, 2016, which involved adding policies and procedures around our assessments to continue as a going concern. Per our quantitative and qualitative analysis, currently there is no substantial doubt as to our ability to continue as a going concern within the next twelve months. During March 2016, ASU 2016-09 – The FASB issued ASU 2016-15, Statement of Cash Flows (Topic 230): Classification of Certain Cash Receipts and Cash Payments (“ASU 2016-15”). This ASU provides clarification on how certain cash receipts and cash payments are presented and classified on the statement of cash flows. This ASU is effective for annual and interim periods beginning in 2018 and is required to be adopted using a retrospective approach if practicable, with early adoption permitted. The Company does not expect the adoption of this ASU to have a material impact on its Consolidated Statement of Cash Flows. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures. During January 2017, the FASB issued ASU 2017-04 – Simplifying the Test for Goodwill Impairment that eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of today’s 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 today’s Step 1). The standard has tiered effective dates, starting in 2020 for calendar-year public business entities that meet the definition of an SEC filer. Early adoption is permitted for interim and annual goodwill impairment testing dates after 1 January 2017. We are currently evaluating the impact this new guidance is expected to have on our financial position or results of operations and related disclosures. We adopted ASU No. 2015-11, Inventory (Topic 330)-Simplifying the Measurement of Inventory (“ASU 2015-11”), which simplifies the subsequent measurement of inventories by replacing the lower of cost or market test with a lower of cost and net realizable value test. The subsequent measurement of inventory test, historically three measurements under lower of cost or market, is replaced by lower of cost and net realizable value test. Thus, we will compare the cost of inventory to only one measure, its net realizable value. When evidence exists that the net realizable value of inventory is less than its cost (due to damage, physical deterioration, obsolescence, changes in price levels or other causes), we will recognize the difference as a loss in earnings in the period in which it occurs. In accordance with ASU 2015-11, we are applying the new guidance on a prospective basis. We adopted ASU No. 2015-17, Income Taxes (Topic 740), Balance Sheet Classification of Deferred Taxes (“ASU 2015-17”). We will classify all deferred tax assets and liabilities as noncurrent on the balance sheet instead of separating deferred taxes into current and noncurrent amounts. In addition, we will no longer allocate valuation allowances between current and noncurrent deferred tax assets because those allowances also will be classified as noncurrent. We have elected to apply ASU 2015-17 on a prospective basis. Therefore, the prior periods were not retroactively adjusted.
Business Combinations	q) Business Combinations We allocate the total purchase price of the acquired tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of the business combination date, with the excess purchase price recorded as goodwill. The purchase price allocation process required us to use significant estimates and assumptions, including fair value estimates, as of the business combination date. Although we believe the assumptions and estimates we have made are reasonable and appropriate, they are based in part on historical experience and information obtained from management of the acquired company, in part based on valuation models that incorporate projections of expected future cash flows and operating plans and are inherently uncertain. Valuations are performed by management or third party valuation specialists under management’s supervision. In determining the fair value of assets acquired and liabilities assumed in business combinations, as appropriate, we may use one of the following recognized valuation methods: the income approach (including discounted cash flows from relief from royalty and excess earnings model), the market approach and/or the replacement cost approach. Examples of significant estimates used to value certain intangible assets acquired include but are not limited to: • sales volume, pricing and future cash flows of the business overall; • future expected cash flows from customer relationships, and other identifiable intangible assets, including future price levels, rates of increase in revenue and appropriate attrition rate; • the acquired company’s brand and competitive position, royalty rate quantum, as well as assumptions about the period of time the acquired brand will continue to benefit to the combined company’s product portfolio; and • cost of capital, risk-adjusted discount rates and income tax rates. However, different assumptions regarding projected performance and other factors associated with the acquired assets may affect the amount recorded under each type of assets and liabilities, mainly between property plant and equipment, intangibles assets, goodwill and deferred income tax liabilities and subsequent assessment could result in future impairment charges. The purchase price allocation process also entails us to refine these estimates over a measurement period not to exceed one year to reflect new information obtained surrounding facts and circumstances existing at acquisition date.

Acquisitions (Tables)

Acquisitions (Tables)	12 Months Ended
	Dec. 31, 2016
PEP [Member]
Summary of Final Fair Values of Assets Acquired and Liabilities Assumed	The following table summarizes the final purchase price allocation for the PEP Acquisition: As Reported Subsequent Final on Adjustments as of December 31, to fair September 30, 2015 value 2016 Consideration: Cash paid $ 621,196 $ — $ 621,196 Cash adjustment — (1,635 ) (1,635 ) Total consideration $ 621,196 $ (1,635 ) $ 619,561 Fair value of assets acquired and liabilities assumed on Current assets $ 69,331 $ 452 $ 69,783 Property, plant and equipment 56,163 (962 ) 55,201 Intangible assets subject to amortization 240,490 — 240,490 Other non-current assets 1,500 — 1,500 Goodwill 364,450 (1,805 ) 362,645 Total assets acquired 731,934 (2,315 ) 729,619 Current liabilities 21,131 — 21,131 Non-current deferred tax liabilities 87,578 (680 ) 86,898 Other non-current liabilities 2,029 — 2,029 Total liabilities assumed 110,738 (680 ) 110,058 Net assets acquired $ 621,196 $ (1,635 ) $ 619,561

Restructuring, Impairment and30

Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures (Tables)	12 Months Ended
	Dec. 31, 2016
Wheeling Plant [Member]
Summary of Restructuring and Integration Charges	The following table summarizes restructuring and integration activity related to actions incurred for the years ended December 31, 2016 and 2015: Year Ended December 31, 2016 2015 Severance and other employee costs $ 5,776 $ 2,019 Site closure and other associated costs 3,970 4,399 Integration and other associated costs 278 850 Total $ 10,024 $ 7,268 Reserve Reserve Balance at Paid in Balance at December 31, 2015 Charges 2016 December 31, 2016 Severance and other employee costs $ 2,517 $ 5,776 $ (5,274 ) $ 3,019 Site closure and other associated costs 1,845 3,970 (4,189 ) 1,626 Integration and other associated costs — 278 (278 ) — Total $ 4,362 $ 10,024 $ (9,741 ) $ 4,645 Reserve Paid in Reserve Balance at Balance at December 31, 2014 Charges 2015 December 31, 2015 Severance and other employee costs $ — $ 2,691 $ (174 ) $ 2,517 Site closure and other associated costs — 1,925 $ (80 ) 1,845 Impairment and write-off charges — 2,652 $ — — Integration and other associated costs — — — — Total $ — $ 7,268 $ (254 ) $ 4,362

Accounts Receivable and Sales31

Accounts Receivable and Sales Concentrations (Tables)	12 Months Ended
	Dec. 31, 2016
Receivables [Abstract]
Summary of Accounts Receivables	December 31, 2016 2015 Trade $ 140,754 $ 124,226 Less—allowance for doubtful accounts 1,207 1,221 Accounts receivable, net $ 139,547 $ 123,005
Summary of Activity in the Allowance for Doubtful Accounts	Activity in the allowance for doubtful accounts is as follows: Balance at Beginning Write- Currency Balance at Description of Year Additions offs Impacts End of Year December 31, 2016 Allowance for doubtful accounts $ 1,221 $ 142 $ (75 ) $ (81 ) $ 1,207 December 31, 2015 Allowance for doubtful accounts $ 520 $ 745 $ (8 ) $ (36 ) $ 1,221 December 31, 2014 Allowance for doubtful accounts $ 445 $ 208 $ (123 ) $ (10 ) $ 520

Inventories (Tables)

Inventories (Tables)	12 Months Ended
	Dec. 31, 2016
Inventory Disclosure [Abstract]
Summary of Inventories	December 31, December 31, 2016 2015 Raw materials $ 49,205 $ 50,204 Work in process 31,348 30,604 Finished goods 34,298 39,028 Inventories $ 114,851 $ 119,836

Property, Plant and Equipment (

Property, Plant and Equipment (Tables)	12 Months Ended
	Dec. 31, 2016
Property, Plant and Equipment [Abstract]
Summary of Property, Plant and Equipment	Estimated December 31, Useful Life 2016 2015 Land and buildings 15-40 years 96,173 97,322 Machinery and equipment 3-12 years 464,291 432,841 Construction in process 21,045 16,049 581,509 546,212 Less—accumulated depreciation 258,556 227,244 Property, plant and equipment, net $ 322,953 $ 318,968

Debt (Tables)

Debt (Tables)	12 Months Ended
	Dec. 31, 2016
Summary of Long-Term Debt and Short-Term Debt	Long-term debt and short-term debt at December 31, 2016 and December 31, 2015 consisted of the following: Amended December 31, December 31, 2016 2015 Borrowings under our $545.0 million Senior Secured Term Loan B bearing interest at the greater of 0.75% or 1 month LIBOR (0.77% at December 31, 2016) plus an applicable margin of 4.25% at September 30, 2016, expiring October 19, 2022, net of debt issuance costs of $19.0 million at December 31, 2016 and $20.6 million at December 31, 2015. $ 524,539 $ 552,957 Borrowings under our $143.0 million Senior Secured Revolver bearing interest at LIBOR (0.77% at December 31, 2016) plus an applicable margin of 3.50% at September 30, 2016, expiring October 19, 2020, net of debt issuance costs of $2.7 million at December 31, 2016 and $2.9 million at December 31, 2015. 25,298 3,547 Borrowings under our $250.0 million Senior Notes bearing interest at 10.25%, maturing on November 1, 2020, net of debt issuance costs of $4.9 million at December 31, 2016 and $5.9 million at December 31, 2015. 245,077 244,088 French Safeguard Obligations (Autocam) 358 2,000 Brazilian lines of credit and equipment notes (Autocam) 573 826 Chinese line of credit (Autocam) 2,619 3,696 Total debt 798,464 807,114 Less current maturities of long-term debt 12,751 11,714 Long-term debt, excluding current maturities of long-term debt $ 785,713 $ 795,400
Schedule of Debt Restated for Adoption of New Accounting Standard	The debt issuance costs were reclassified from other non-current assets and directly applied to the associated liability. Reported ASU 2015-13 Amended Borrowings under our $575.0* million Senior Secured Term $ 562,580 $ (9,623 ) $ 552,957 Borrowings under our $100.0** million Senior Secured Revolver 6,462 (2,915 ) 3,547 Borrowings under our $250.0 million Senior Notes 244,509 (421 ) 244,088 French Safeguard Obligations (Autocam) 2,000 2,000 Brazilian lines of credit and equipment notes (Autocam) 826 826 Chinese line of credit (Autocam) 3,696 3,696 Total debt 820,073 807,114 Less current maturities of long-term debt 11,714 11,714 Long-term debt, excluding current maturities of long-term debt $ 808,359 $ 795,400 * Amended from $575 million down to $545 million on September 30, 2016. ** Amended from $100 million up to $133 million on September 30, 2016; incremental amendment from $133 million up to $143 million in October 2016.
Aggregate Maturities of Long-Term Debt Including Current Portion	The aggregate maturities of long-term debt including current portion for each of the five years subsequent to December 31, 2016 are as follows: Year ending December 31, 2017 $ 12,751 2018 5,968 2019 5,968 2020 279,841 2021 5,750 Thereafter 514,812 Total debt $ 825,090 Less debt issuance costs (26,626 ) Total debt, net of debt issuance cost $ 798,464
Minimum Future Lease Payments Under Both Capital Leases and Assumed Capital Leases Together with Present Value of Net Minimum Lease Payments	Below are the aggregate minimum future lease payments under both capital leases together with the present value of the net minimum lease payments as of December 31, 2016: Year ending December 31, 2017 $ 434 2018 434 2019 434 2020 434 2021 434 Thereafter 2,601 Total minimum lease payments 4,771 Less interest included in payments above (1,462 ) Present value of minimum lease payments $ 3,309
Autocam [Member]
Minimum Future Lease Payments Under Both Capital Leases and Assumed Capital Leases Together with Present Value of Net Minimum Lease Payments	Below are the minimum future lease payments under the assumed capital leases together with the present value of the net minimum lease payments as of December 31, 2016: Year ending December 31, 2017 $ 3,521 2018 2,530 2019 803 2020 0 2021 0 Thereafter 0 Total minimum lease payments 6,854 Less interest included in payments above (282 ) Present value of minimum lease payments $ 6,572

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Schedule of Changes to Post-Employment Benefits	The amounts shown in the table below represent the actual liabilities at December 31, 2016 and 2015 reported under accrued post-employment benefits in the Consolidated Balance Sheets for both plans combined. 2016 2015 Beginning balance $ 5,189 $ 6,024 Amounts accrued 135 53 Payments to employees/government managed plan (452 ) (266 ) Foreign currency impacts (165 ) (622 ) Ending balance $ 4,707 $ 5,189
Summary of Projected Benefit Obligation Information for Pension Plan	Set forth below is projected benefit obligation information for the Pension Plan and the plan activity for the years ended December 31, 2016 and 2015: 2016 2015 Accumulated benefit obligation at measurement date $ 949 $ 950 Effect of salary increases 533 494 Projected benefit obligation at measurement date $ 1,482 $ 1,444 Projected benefit obligation at date of acquisition $ 1,444 $ 1,537 Service and interest costs 113 103 Actuarial gains (losses) 118 (15 ) Benefits paid (141 ) (22 ) Effect of foreign currency translation gains and other (50 ) (159 ) Projected benefit obligation at measurement date $ 1,484 $ 1,444
Summary of Net Periodic Benefit Cost Information for Pension Plan	Set forth below is net periodic benefit cost information for the Pension Plan for the years ended December 31, 2016 and 2015: 2016 2015 Service and interest costs $ 113 $ 103 Expected return on plan assets (10 ) (11 ) Amortization of prior service costs 27 28 Net periodic benefit cost $ 130 $ 120
Schedule of Expected Benefit Payments under Pension Plan	We expect benefit payments under the Pension Plan to be: Year ending December 31, 2017 $ 14 2018 7 2019 — 2020 25 2021 9 2022-2026 213 Total benefit payments 268
Summary of Net Plan Asset Information for Pension Plan	Set forth below is plan asset information for the Pension Plan: 2016 2015 Plan assets at fair value at measurement date $ 426 $ 515 Projected benefit obligations at measurement date (1,482 ) (1,444 ) Funded status $ (1,056 ) $ (929 ) Plan assets at fair value at date of acquisition $ 515 $ 589 Actual return on plan assets 64 9 Benefits paid (141 ) (22 ) Effect of foreign currency translation gains (13 ) (61 ) Plan assets at fair value at measurement date $ 425 $ 515

Stock Based Compensation (Table

Stock Based Compensation (Tables)	12 Months Ended
	Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Weighted Average Assumptions Relevant to Determining the Fair Value at the Dates of Grant	The weighted average assumptions relevant to determining the fair value at the dates of grant are below: 2016 2015 2014 Term 6 years 6 years 6 years Risk free interest rate 1.43 % 1.43 % 1.75 % Dividend yield 2.48 % 1.11 % 1.43 % Expected volatility 59.23 % 59.22 % 56.75 % Expected forfeiture rate 3.00 % 3.00 % 3.00 %
Reconciliation of Option Activity	The following table provides a reconciliation of option activity for the year ended December 31, 2016: Options Shares (000) Weighted- Weighted- Aggregate Outstanding at January 1, 2016 1,034 $ 12.09 Granted 167 $ 11.31 Exercised (270 ) $ 10.49 Forfeited or expired (34 ) $ 17.52 Outstanding at December 31, 2016 897 $ 12.22 5.9 6,479 (1) Exercisable at December 31, 2016 686 $ 11.59 4.9 5,267 (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 December 31, 2016.
Schedule of Performance Based Awards Goals with Respect to TSR and ROIC	The following table establish the goals with respect to TSR and ROIC: TSR: Threshold Performance (50% of Shares) Target Performance Maximum Performance 35th Percentile 50th Percentile 75th Percentile ROIC: Threshold Performance (35% of Shares) Target Performance Maximum Performance 11% 12.5 % 14 %

Goodwill, Net (Tables)

Goodwill, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill for the years ended December 31, 2016, 2015 and 2014 are as follows: Precision Autocam Precision Total Balance as of December 31, 2014 $ 9,949 $ 73,992 $ — $ 83,941 Currency impacts (838 ) — — (838 ) Goodwill acquired in acquisition — — 366,795 366,795 Balance as of December 31, 2015 $ 9,111 $ 73,992 $ 366,795 $ 449,898 Currency impacts (202 ) (601 ) (2,051 ) (2,854 ) Adjustments to goodwill — — (1,805 ) (1,805 ) Other adjustments (a) — (2,674 ) 7,746 5,072 Balance as of December 31, 2016 $ 8,909 $ 70,717 $ 370,685 $ 450,311 (a) During the year ended December 31, 2016, the Company identified certain prior period errors primarily relating to the initial recognition of goodwill and deferred taxes in purchase accounting (see Note 13) and the subsequent foreign currency translation of goodwill. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors in 2016 as reflected above.

Intangible Assets, Net (Tables)

Intangible Assets, Net (Tables)	12 Months Ended
	Dec. 31, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Summary of Changes in Carrying Amount of Intangible Assets, Net	The change in the carrying amount of intangible assets, net, for the years ended December 31, 2016 and 2015 are as follows: Precision Autocam Precision Total Balance as of December 31, 2014 $ 2,328 $ 50,499 $ — $ 52,827 Additions — — 242,980 242,980 Amortization (238 ) (3,625 ) (9,180 ) (13,043 ) Currency impacts (138 ) (457 ) — (595 ) Balance as of December 31, 2015 $ 1,952 $ 46,417 $ 233,800 $ 282,169 Amortization (207 ) (3,533 ) (22,465 ) (26,205 ) Currency impacts (27 ) 44 — 17 Balance as of December 31, 2016 $ 1,718 $ 42,928 $ 211,335 $ 255,981

Segment Information (Tables)

Segment Information (Tables)	12 Months Ended
	Dec. 31, 2016
Segment Reporting [Abstract]
Segment Information	Precision Precision Autocam Corporate and Total December 31, 2016 Net sales $ 248,534 $ 258,816 $ 326,138 $ — $ 833,488 Depreciation and amortization 11,676 28,020 22,189 603 62,488 Income from operations 22,985 34,744 29,516 (27,845 ) 59,400 Interest expense 63,154 63,154 Income tax (benefit) expense (9,313 ) (9,313 ) Net income (loss) 7,942 7,942 Assets $ 220,152 $ 715,575 $ 416,490 $ 8,169 $ 1,360,386 Expenditures for long-lived assets $ 11,926 $ 5,352 $ 23,077 $ 3,465 $ 43,820 December 31, 2015 Net sales $ 261,837 $ 77,183 $ 328,260 $ — $ 667,280 Depreciation and amortization 11,496 11,295 21,472 219 44,482 Income from operations 26,310 (3,718 ) 31,700 (27,495 ) 26,797 Interest expense 29,899 29,899 Income tax (benefit) expense (10,518 ) (10,518 ) Net income (loss) (7,431 ) (7,431 ) Assets $ 215,163 $ 743,191 $ 417,853 $ 17,319 $ 1,393,526 Expenditures for long-lived assets $ 15,111 $ 728 $ 21,341 $ 1,373 $ 38,553 December 31, 2014 Net sales $ 278,026 $ 33,351 $ 177,224 $ — $ 488,601 Depreciation and amortization 12,000 1,160 9,070 (84 ) 22,146 Income from operations 31,872 1,231 15,732 (21,148 ) 27,687 Interest Expense 10,895 10,895 Income tax (benefit) expense 5,786 5,786 Net income (loss) 8,217 8,217 Assets $ 214,291 $ 17,196 $ 444,548 $ 36,678 $ 712,713 Expenditures for long- lived assets $ 10,941 $ 673 $ 10,947 $ 5,041 $ 27,602
Revenue from External Customers and Long-lived Assets	December 31, 2016 December 31, 2015 December 31, 2014 Net Sales Property, Net Sales Property, Net Sales Property, United States $ 456,102 $ 176,632 $ 326,747 $ 183,226 $ 204,360 $ 129,232 Europe 172,895 78,664 170,921 77,147 167,665 82,783 Asia 102,853 33,867 86,564 35,345 58,470 32,848 Canada 10,980 — 9,759 — 8,657 — Mexico 54,390 6,308 39,118 2,971 25,900 2,637 S. America 36,268 27,482 34,171 20,279 23,549 30,942 All foreign countries 377,386 146,321 340,533 135,742 284,241 149,210 Total $ 833,488 $ 322,953 $ 667,280 $ 318,968 $ 488,601 $ 278,442

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income (Loss) Before Provision (Benefit) for Income Taxes	Income (loss) before provision (benefit) for income taxes for the years ended December 31, 2016, 2015 and 2014 was as follows: Year ended December 31, 2016 2015 2014 Income (loss) before provision (benefit) for income taxes: United States $ (32,498 ) $ (42,450 ) $ (9,341 ) Foreign 25,189 19,500 22,513 Total $ (7,309 ) $ (22,950 ) $ 13,172
Income Tax Expense (Benefit)	Total income tax expense (benefit) for the years ended December 31, 2016, 2015, and 2014 was as follows: Year ended December 31, 2016 2015 2014 Current: U.S. Federal $ — $ — $ — State 1,017 420 37 Foreign 6,968 5,940 7,082 Total current expense $ 7,985 $ 6,360 $ 7,119 Deferred: U.S. Federal $ (11,033 ) $ (13,391 ) $ 1,625 State (6,440 ) (1,869 ) (382 ) U.S. deferred tax valuation allowance 1,882 — (1,434 ) Foreign (1,707 ) (1,618 ) (1,142 ) Total deferred expense (benefit) (17,298 ) (16,878 ) (1,333 ) Total expense (benefit) (a) $ (9,313 ) $ (10,518 ) $ 5,786 (a) During the year ended December 31, 2016, the Company identified certain prior period tax expense (benefit) errors. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments in 2016, resulting in $998 of tax benefit being recognized in 2016 that should have been recognized in 2015.
Reconciliation of Income Taxes Based on U.S. Federal Statutory Rate	A reconciliation of income taxes based on the U.S. federal statutory rate of 34% for each of the years ended December 31, 2016, 2015 and 2014 is summarized as follows: Year ended December 31, 2016 2015 2014 Income taxes at the federal statutory rate $ (2,490 ) $ (7,803 ) $ 4,478 Decrease in U.S. valuation allowance 1,882 — (1,434 ) Foreign tax credit (additions) expiration (2,545 ) (1,343 ) 2,736 State taxes, net of federal taxes (1,558 ) (1,592 ) (362 ) Non-U.S. earnings taxed at different rates (2,938 ) (2,308 ) (1,714 ) Non-deductible mergers and acquisition costs — 1,299 1,971 R&D Tax credit (282 ) (623 ) (529 ) Change in uncertain tax positions (994 ) — — Other permanent differences, net (388 ) 1,852 640 $ (9,313 ) $ (10,518 ) $ 5,786
Tax Effects of Temporary Differences	The tax effects of the temporary differences as of December 31, 2016, 2015 and 2014 are as follows: December 31, 2016 2015 2014 Deferred income tax liabilities: Tax in excess of book depreciation $ 43,336 $ 42,345 $ 35,411 Goodwill 1,580 1,554 1,949 Intangible assets 86,492 91,947 15,944 Other deferred tax liabilities 1,771 897 1,924 Gross deferred income tax liabilities 133,179 136,743 55,228 Deferred income tax assets: Goodwill 1,165 1,666 2,411 Inventories 960 4,490 2,035 Pension/Personnel accruals 1,602 2,778 3,029 Net operating loss carry forwards 10,296 8,313 1,196 Foreign tax credits 5,759 3,242 290 Guarantee claim deduction 414 1,141 1,141 Credit carry forwards 4,581 4,958 1,853 Accruals and reserves 1,741 — — Other deferred tax assets 11,160 2,510 1,926 Gross deferred income tax assets 37,678 29,098 13,881 Valuation allowance on deferred tax assets (4,090 ) (2,376 ) — Net deferred income tax assets 33,588 26,722 13,881 Net deferred income tax assets (liabilities) (b) $ (99,591 ) $ (110,021 ) $ (41,347 ) (b) During the year ended December 31, 2016, the Company identified certain prior period errors related to the initial recognition of goodwill and deferred taxes in purchase accounting (see Note 10) as well as prior period errors in the 2015 tax provision as further described above. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors in 2016. The impact of these purchase accounting and tax provision errors resulted in an understatement (overstatement) of net deferred income tax liabilities of $4,469 and $(1,444) as of December 31, 2015 and 2014.
Summary of Activity in Total Valuation Allowances	Below is a summary of the activity in the total valuation allowances during the years ended December 31, 2016, 2015 and 2014: Balance at Additions Recoveries Balance at 2016 $ 2,376 $ 1,882 $ (168 ) $ 4,090 2015 $ — $ 2,376 $ — $ 2,376 2014 $ 1,434 $ — $ (1,434 ) $ —
Summary of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits, Excluding Interest and Penalties	A reconciliation of the beginning and ending amounts of unrecognized tax benefits, excluding interest and penalties for the years ended December 31, 2016, 2015 and 2014 is as follows: 2016 2015 2014 Beginning balance $ 5,724 $ 3,834 $ 873 Additions for tax positions of prior years 179 2,516 3,589 Reductions for tax positions of prior years (1,162 ) (626 ) (628 ) Ending balance $ 4,741 $ 5,724 $ 3,834

Reconciliation of Net Income 41

Reconciliation of Net Income (Loss) Per Share (Tables)	12 Months Ended
	Dec. 31, 2016
Earnings Per Share [Abstract]
Summary of Reconciliation of Net Income (Loss) Per Share	Year ended December 31, 2016 2015 2014 Net income (loss) $ 7,942 $ (7,431 ) $ 8,217 Weighted average shares outstanding 27,016 21,181 17,887 Effect of dilutive stock options 138 — 366 Diluted shares outstanding 27,154 21,181 18,253 Basic net income (loss) per share $ 0.29 $ (0.35 ) $ 0.46 Diluted net income (loss) per share $ 0.29 $ (0.35 ) $ 0.45

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2016
Commitments and Contingencies Disclosure [Abstract]
Schedule by Year of Future Minimum Lease Payments	The following is a schedule by year of future minimum lease payments as of December 31, 2016 under operating leases that have initial or remaining non-cancelable lease terms in excess of one year. Year ending December 31, 2017 $ 7,824 2018 6,830 2019 5,785 2020 4,882 2021 2,802 Thereafter 3,149 Total minimum lease payments $ 31,272

Investment in Non-Consolidate43

Investment in Non-Consolidated Joint Venture (Tables)	12 Months Ended
	Dec. 31, 2016
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 years ended December 31, 2016, 2015 and 2014: Balance as of August 29, 2014 $ 35,595 Dividends received (2,538 ) Our share of cumulative earnings 1,646 Accretion of basis difference from purchase accounting (372 ) Balance as of December 31, 2014 $ 34,331 Capital contributions 1,999 Dividends received (2,868 ) Our share of cumulative earnings 5,440 Accretion of basis difference from purchase accounting (440 ) Balance as of December 31, 2015 $ 38,462 Our share of cumulative earnings 6,427 Dividends declared and paid by joint venture (3,706 ) Accretion of basis difference from purchase accounting (489 ) Balance as of December 31, 2016 $ 40,694
Summarized Balance Sheet Information for Joint Venture	Set forth below is summarized balance sheet information for the JV: December 31, December 31, 2016 2015 Current assets $ 31,295 $ 24,663 Non-current assets 22,522 22,847 Total assets $ 53,817 $ 47,510 Current liabilities $ 13,549 $ 11,171 Total liabilities $ 13,549 $ 11,171

Quarterly Results of Operatio44

Quarterly Results of Operations (Unaudited) (Tables)	12 Months Ended
	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Summary of Unaudited Quarterly Results of Operations	The following summarizes the unaudited quarterly results of operations for the years ended December 31, 2016 and 2015. Year ended December 31, 2016 March 31 June 30 Sept. 30 Dec. 31 Net sales $ 212,226 $ 214,272 $ 204,961 $ 202,029 Income from operations $ 11,874 $ 16,703 $ 18,727 $ 12,096 Net income (a) $ (1,299 ) $ 2,031 $ 4,147 $ 3,063 Comprehensive income (loss)(a) $ 4,418 $ (973 ) $ 8,740 $ (10,212 ) Basic net income per share $ (0.05 ) $ 0.08 $ 0.15 $ 0.11 Diluted net income per share $ (0.05 ) $ 0.07 $ 0.15 $ 0.11 Weighted average shares outstanding: Basic number of shares 26,869 27,024 27,159 27,241 Effect of dilutive stock options — 163 163 180 Diluted number of shares 26,869 27,187 27,322 27,421 Year ended December 31, 2015 March 31 June 30 Sept. 30 Dec. 31 Net sales $ 163,746 $ 164,856 $ 154,824 $ 183,854 Income from operations $ 13,934 $ 13,589 $ 10,122 $ (10,848 ) Net income (a) $ 6,001 $ 6,953 $ 4,630 $ (25,015 ) Comprehensive income (loss)(a) $ (11,856 ) $ 10,955 $ (2,121 ) $ (28,929 ) Basic net income per share $ 0.32 $ 0.36 $ 0.17 $ (0.93 ) Diluted net income per share $ 0.31 $ 0.36 $ 0.17 $ (0.93 ) Weighted average shares outstanding: Basic number of shares 18,996 19,215 26,839 26,840 Effect of dilutive stock options 384 367 328 — Diluted number of shares 19,380 19,582 27,167 26,840 (a) During the fourth quarter ended December 31, 2016, the Company identified certain prior period tax errors. The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments in 2016, resulting in $998 of tax benefit being recognized in the fourth quarter of 2016 that should have been recognized in the fourth quarter of 2015. During 2016 the Company identified certain prior period comprehensive income errors which primarily related to the accounting for deferred taxes related to unrealized gains (losses) of the fair value of derivatives and the accounting for the foreign currency translation of goodwill (see Note 10). The Company has determined that such errors were not material to the previously issued financial statements and therefore has corrected for such errors as out of period adjustments. The impact of these errors on other comprehensive income resulted in an increase (decrease) to comprehensive income of $582, $(517), $(2,542), $3,104, $91, $166, $345, $(955) for the quarters ended March 31, 2016, June 30, 2016, September 31, 2016, December 31, 2016, March 31, 2015, June 30, 2015, September 30, 2015 and December 31, 2015.

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2016
Fair Value Disclosures [Abstract]
Effect of Financial Assets and Liabilities Valued on Recurring Basis	The tables below summarizing the fair value measurement of this swap valued on a recurring basis on a gross basis: Fair Value Measurements at December 31, 2016 Description December 31, Quoted Prices in Significant Other Significant 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 ) $ — Fair Value Measurements at December 31, 2015 Description December 31, Quoted Prices in Significant Other Significant Derivative asset—current $ 388 $ — $ 388 $ — Derivative asset—noncurrent 368 — 368 — Derivative liability—current (2,098 ) — (2,098 ) — Derivative liability—noncurrent (1,673 ) — (1,673 ) — $ (3,015 ) $ — $ (3,015 ) $ —
Effect of Derivatives' Hedging Relationships	Amount recognized in Other Comprehensive Income (effective portion) Location of gain/(loss) Net Income (effective Pre-tax amount of gain/(loss) AOCI in Net Income Derivatives’ Cash Flow Hedging Relationships December 31, December 31, 2015 December 31, December 31, Forward starting interest rate swap contract $ — $ (3,015 ) Interest Expense $ (1,393 ) $ — $ — $ (3,015 ) $ (1,393 ) $ —

Summary of Significant Accoun46

Summary of Significant Accounting Policies and Practices - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Significant Accounting Policies [Line Items]
Share-based compensation expense	$ 4,270	$ 3,704	$ 2,595
Maturity period of highly liquid investments	Three months or less
Percentage of subsidiaries owned	100.00%	100.00%	100.00%
Selling, General and Administrative Expense [Member]
Significant Accounting Policies [Line Items]
Share-based compensation expense	$ 4,300	$ 3,700	$ 2,600
Selling, General and Administrative Expense [Member] | Executive Officer [Member]
Significant Accounting Policies [Line Items]
Share-based compensation expense		$ 200	$ 200
Joint Venture [Member]
Significant Accounting Policies [Line Items]
Percentage of subsidiaries owned	49.00%
RFK [Member]
Significant Accounting Policies [Line Items]
Percentage of subsidiaries owned	99.70%

Acquisitions - Additional Infor

Acquisitions - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2016
PEP [Member]
Business Acquisition [Line Items]
Date of acquisition	Oct. 19, 2015

Acquisitions - Summary of Final

Acquisitions - Summary of Final Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Oct. 19, 2015	Sep. 30, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2014
Consideration:
Property, plant and equipment			$ 59,100
Goodwill			449,898	$ 450,311	$ 83,941
PEP [Member]
Consideration:
Cash paid		$ 621,196	621,196
Cash adjustment		(1,635)
Total consideration		619,561	621,196
Current assets		69,783	69,331
Property, plant and equipment		55,201	56,163
Intangible assets subject to amortization		240,490	240,490
Other non-current assets		1,500	1,500
Goodwill		362,645	364,450
Total assets acquired		729,619	731,934
Current liabilities		21,131	21,131
Non-current deferred tax liabilities		86,898	87,578
Other non-current liabilities		2,029	2,029
Total liabilities assumed		110,058	110,738
Net assets acquired		$ 619,561	$ 621,196
PEP [Member] | Subsequent Adjustments to Fair Value [Member]
Consideration:
Cash adjustment	$ (1,635)
Total consideration	(1,635)
Current assets	452
Property, plant and equipment	(962)
Goodwill	(1,805)
Total assets acquired	(2,315)
Non-current deferred tax liabilities	(680)
Total liabilities assumed	(680)
Net assets acquired	$ (1,635)

Restructuring, Impairment and49

Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	$ 10,000	$ 7,300
Precision Engineered Products Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	1,300	900
Precision Bearing Components Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	4,400	2,000
Corporate and Consolidations [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost		1,800
Wheeling Plant [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	10,024	7,268
Wheeling Plant [Member] | Severance and Other Employee Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	5,776	2,691
Wheeling Plant [Member] | Autocam Precision Components Group [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	4,300	$ 2,600
Wheeling Plant [Member] | Autocam Precision Components Group [Member] | Severance and Other Employee Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	800
Wheeling Plant [Member] | Autocam Precision Components Group [Member] | Asset Impairment Charges [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	300
Wheeling Plant [Member] | Autocam Precision Components Group [Member] | Site Closure Costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring and integration cost	$ 3,200

Restructuring, Impairment and50

Restructuring, Impairment and Integration Charges, excluding Goodwill Impairments, and Divestitures - Summary of Restructuring and Integration Charges (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Restructuring Cost and Reserve [Line Items]
Total	$ 10,024	$ 7,268	$ 875
Charges	10,000	7,300
Wheeling Plant [Member]
Restructuring Cost and Reserve [Line Items]
Severance and other employee costs	5,776	2,019
Site closure and other associated costs	3,970	4,399
Integration and other associated costs	278	850
Total	10,024	7,268
Reserve beginning balance	4,362
Charges	10,024	7,268
Paid in	(9,741)	(254)
Reserve ending balance	4,645	4,362
Wheeling Plant [Member] | Severance and Other Employee Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reserve beginning balance	2,517
Charges	5,776	2,691
Paid in	(5,274)	(174)
Reserve ending balance	3,019	2,517
Wheeling Plant [Member] | Site Closure and Other Associated Costs [Member]
Restructuring Cost and Reserve [Line Items]
Reserve beginning balance	1,845
Charges	3,970	1,925
Paid in	(4,189)	(80)
Reserve ending balance	1,626	1,845
Wheeling Plant [Member] | Integration and Other Associated Costs [Member]
Restructuring Cost and Reserve [Line Items]
Charges	278
Paid in	$ (278)
Wheeling Plant [Member] | Impairment and Write-off Charges [Member]
Restructuring Cost and Reserve [Line Items]
Charges		$ 2,652

Accounts Receivable and Sales51

Accounts Receivable and Sales Concentrations - Summary of Accounts Receivables (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Receivables [Abstract]
Trade	$ 140,754	$ 124,226
Less-allowance for doubtful accounts	1,207	1,221	$ 520	$ 445
Accounts receivable, net	$ 139,547	$ 123,005

Accounts Receivable and Sales52

Accounts Receivable and Sales Concentrations - Summary of Activity in the Allowance for Doubtful Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Receivables [Abstract]
Balance at Beginning of Year	$ 1,221	$ 520	$ 445
Additions	142	745	208
Write- offs	(75)	(8)	(123)
Currency Impacts	(81)	(36)	(10)
Balance at End of Year	$ 1,207	$ 1,221	$ 520

Accounts Receivable and Sales53

Accounts Receivable and Sales Concentrations - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net sales	$ 202,029	$ 204,961	$ 214,272	$ 212,226	$ 183,854	$ 154,824	$ 164,856	$ 163,746	$ 833,488	$ 667,280	$ 488,601
Accounts receivable, net	139,547				123,005				139,547	123,005
SKF [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Net sales									$ 104,200	$ 105,700	$ 128,000
Accounts receivable concentrations in excess									10.00%	10.00%
Accounts receivable, net	$ 20,500				$ 16,200				$ 20,500	$ 16,200

Accounts Receivable and Sales54

Accounts Receivable and Sales Concentrations - Concentration Risk - Additional Information (Detail) - Customer Concentration Risk [Member] - Sales Revenue Net [Member]	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Percentage of consolidated revenue	10.00%	10.00%	10.00%
SKF [Member]
Concentration Risk [Line Items]
Percentage of consolidated revenue	13.00%	16.00%	26.00%

Inventories - Summary of Invent

Inventories - Summary of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Raw materials	$ 49,205	$ 50,204
Work in process	31,348	30,604
Finished goods	34,298	39,028
Inventories	$ 114,851	$ 119,836

Inventories - Additional Inform

Inventories - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015
Inventory Disclosure [Abstract]
Finished goods inventory on consignment at customers' location	$ 5	$ 5.1

Property, Plant and Equipment -

Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 581,509	$ 546,212
Less-accumulated depreciation	258,556	227,244
Property, plant and equipment, net	322,953	318,968	$ 278,442
Land and Buildings [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 96,173	97,322
Land and Buildings [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	15 years
Land and Buildings [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	40 years
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 464,291	432,841
Machinery and Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	3 years
Machinery and Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Life	12 years
Construction in Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment, Gross	$ 21,045	$ 16,049

Property, Plant and Equipment58

Property, Plant and Equipment - Additional Information (Detail) $ in Millions	12 Months Ended
	Dec. 31, 2016USD ($)Business	Dec. 31, 2015USD ($)Business	Dec. 31, 2014USD ($)Business
Property, Plant and Equipment [Abstract]
Property, plant and equipment acquired		$ 59.1
Number of businesses acquired | Business	0	2	4
Depreciation expense	$ 36	$ 31.5	$ 20.8

Debt - Summary of Long-Term Deb

Debt - Summary of Long-Term Debt and Short-Term Debt (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 798,464	$ 807,114
Less current maturities of long-term debt	12,751	11,714
Long-term debt, excluding current maturities of long-term debt	785,713	795,400
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes	245,077	244,088
French Safeguard [Member]
Debt Instrument [Line Items]
French Safeguard Obligations	358	2,000
Brazilian [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	573	826
Chinese [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	2,619	3,696
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes	524,539	552,957
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	$ 25,298	$ 3,547

Debt - Summary of Long-Term D60

Debt - Summary of Long-Term Debt and Short-Term Debt (Parenthetical) (Detail) - USD ($)	Sep. 30, 2016	Dec. 31, 2016	Oct. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Debt issuance costs		$ 26,626,000
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings		$ 250,000,000
Interest rate		10.25%
Debt maturity date		Nov. 1, 2020
Debt issuance costs		$ 4,900,000			$ 5,900,000
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings	$ 545,000,000	$ 545,000,000		$ 575,000,000
Interest rate	0.75%
Interest rate		0.77%
Applicable margin	4.25%	4.25%
Debt issuance costs		$ 19,000,000			20,600,000
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%
Senior Secured Term Loan B [Member] | Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate		0.75%
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Debt issuance costs		$ 2,700,000			$ 2,900,000
Borrowings	$ 133,000,000	$ 143,000,000	$ 143,000,000	$ 100,000,000
Debt maturity date		Oct. 19, 2020
Senior Secured Revolving Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Interest rate		0.77%
Applicable margin		3.50%

Debt - Additional Information (

Debt - Additional Information (Detail)	Sep. 30, 2016USD ($)	Oct. 19, 2015USD ($)	Oct. 01, 2011USD ($)ft²	Jun. 01, 2004USD ($)ft²	Dec. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)	Oct. 31, 2016USD ($)	Jun. 30, 2016USD ($)
Line of Credit Facility [Line Items]
Debt issuance costs wrote off					$ 3,089,000	$ 18,673,000	$ 1,398,000
Period of lease agreement			20 years	20 years
Lease of land and building | ft²			75,000	110,000
Undiscounted annual lease payments			$ 200,000	$ 300,000
Aggregate non discounted lease payments over the twenty year term			3,600,000	5,600,000
Capital leased assets reflected in property, plant and equipment, net							$ 25,000,000
accumulated depreciation of capital leased assets					3,600,000	2,600,000
Senior Notes Due 2020 [Member]
Line of Credit Facility [Line Items]
Borrowings					$ 250,000,000
Debt instrument interest rate stated percentage					10.25%
Senior Secured Term Loan B [Member]
Line of Credit Facility [Line Items]
Borrowings	$ 545,000,000				$ 545,000,000				$ 575,000,000
Debt instrument interest rate stated percentage	0.75%
Debt instrument, applicable margin	4.25%				4.25%
New Senior Credit Facilities [Member]
Line of Credit Facility [Line Items]
Senior secured revolving credit facility maximum borrowing capacity	$ 133,000,000							$ 143,000,000
Senior secured revolving credit facility current borrowing capacity	100,000,000
Debt threshold limit	30,000,000
Debt threshold limit after amendment	$ 42,900,000
Percentage of borrowings under line of credit facility to be exceeded aggregate commitments to maintain net leverage ratio	30.00%
Debt issuance costs	$ 4,000,000
Debt issuance costs wrote off	$ 2,600,000
Term Loan Credit Facility [Member] | PEP [Member]
Line of Credit Facility [Line Items]
Senior secured revolving credit facility maximum borrowing capacity		$ 525,000,000
Line of credit facility, Expiration period		7 years
Line of credit facility, Additional borrowing feature, amount		$ 100,000,000
Senior Secured Revolving Credit Facility [Member] | PEP [Member]
Line of Credit Facility [Line Items]
Line of credit facility, Expiration period		5 years
Line of credit facility, Additional borrowing feature, amount		$ 100,000,000
Senior Secured Revolving Credit Facility [Member] | Senior Notes Due 2020 [Member] | PEP [Member]
Line of Credit Facility [Line Items]
Borrowings		$ 300,000,000
Debt instrument interest rate stated percentage		10.25%
Land Owned [Member]
Line of Credit Facility [Line Items]
Fair value			800,000	500,000
Building [Member]
Line of Credit Facility [Line Items]
Fair value			$ 1,100,000	$ 1,900,000
French Safeguard [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate stated percentage					0.00%
French Safeguard Obligations					$ 358,000	$ 2,000,000
Current maturities of French Safeguard obligations					100,000
Noncurrent maturities of French Safeguard obligations					$ 300,000
Minimum [Member] | Senior Secured Term Loan B [Member]
Line of Credit Facility [Line Items]
Debt instrument interest rate stated percentage					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%
Minimum [Member] | Chinese [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate					1.40%
Maximum [Member] | Brazilian [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate					9.10%
Maximum [Member] | Chinese [Member]
Line of Credit Facility [Line Items]
Lines of credit annual interest rate					4.60%

Debt - Schedule of Debt Restate

Debt - Schedule of Debt Restated for Adoption of New Accounting Standard (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Total debt	$ 798,464	$ 807,114
Less current maturities of long-term debt	12,751	11,714
Long-term debt, excluding current maturities of long-term debt	785,713	795,400
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes	245,077	244,088
French Safeguard [Member]
Debt Instrument [Line Items]
French Safeguard Obligations	358	2,000
Brazilian [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	573	826
Chinese [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	2,619	3,696
Audited [Member]
Debt Instrument [Line Items]
Total debt		820,073
Less current maturities of long-term debt		11,714
Long-term debt, excluding current maturities of long-term debt		808,359
Audited [Member] | Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		244,509
Audited [Member] | French Safeguard [Member]
Debt Instrument [Line Items]
French Safeguard Obligations		2,000
Audited [Member] | Brazilian [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		826
Audited [Member] | Chinese [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		3,696
Restated [Member]
Debt Instrument [Line Items]
Total debt		807,114
Less current maturities of long-term debt		11,714
Long-term debt, excluding current maturities of long-term debt		795,400
Restated [Member] | Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		244,088
Restated [Member] | French Safeguard [Member]
Debt Instrument [Line Items]
French Safeguard Obligations		2,000
Restated [Member] | Brazilian [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		826
Restated [Member] | Chinese [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		3,696
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes	524,539	552,957
Senior Secured Term Loan B [Member] | Audited [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		562,580
Senior Secured Term Loan B [Member] | Restated [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		552,957
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings under line of credit	$ 25,298	3,547
Senior Secured Revolving Facility [Member] | Audited [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		6,462
Senior Secured Revolving Facility [Member] | Restated [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		3,547
ASU 2015-13 Reclass [Member] | Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		(421)
ASU 2015-13 Reclass [Member] | Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings under Senior Notes		(9,623)
ASU 2015-13 Reclass [Member] | Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings under line of credit		$ (2,915)

Debt - Schedule of Debt Resta63

Debt - Schedule of Debt Restated for Adoption of New Accounting Standard (Parenthetical) (Detail) - USD ($)	Dec. 31, 2016	Oct. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Dec. 31, 2015
Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings	$ 250,000,000
Senior Notes Due 2020 [Member] | Audited [Member]
Debt Instrument [Line Items]
Borrowings					$ 250,000,000
Senior Notes Due 2020 [Member] | Restated [Member]
Debt Instrument [Line Items]
Borrowings					250,000,000
Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings	545,000,000		$ 545,000,000	$ 575,000,000
Senior Secured Term Loan B [Member] | Audited [Member]
Debt Instrument [Line Items]
Borrowings					575,000,000
Senior Secured Term Loan B [Member] | Restated [Member]
Debt Instrument [Line Items]
Borrowings					575,000,000
Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings	$ 143,000,000	$ 143,000,000	$ 133,000,000	$ 100,000,000
Senior Secured Revolving Facility [Member] | Audited [Member]
Debt Instrument [Line Items]
Borrowings					100,000,000
Senior Secured Revolving Facility [Member] | Restated [Member]
Debt Instrument [Line Items]
Borrowings					100,000,000
ASU 2015-13 Reclass [Member] | Senior Notes Due 2020 [Member]
Debt Instrument [Line Items]
Borrowings					250,000,000
ASU 2015-13 Reclass [Member] | Senior Secured Term Loan B [Member]
Debt Instrument [Line Items]
Borrowings					575,000,000
ASU 2015-13 Reclass [Member] | Senior Secured Revolving Facility [Member]
Debt Instrument [Line Items]
Borrowings					$ 100,000,000

Debt - Aggregate Maturities of

Debt - Aggregate Maturities of Long-Term Debt Including Current Portion (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Debt Disclosure [Abstract]
2,017	$ 12,751
2,018	5,968
2,019	5,968
2,020	279,841
2,021	5,750
Thereafter	514,812
Total debt	825,090
Less debt issuance costs	(26,626)
Total debt	$ 798,464	$ 807,114

Debt - Minimum Future Lease Pay

Debt - Minimum Future Lease Payments Under Both Capital Leases and Assumed Capital Leases Together with Present Value of Net Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Debt Instrument [Line Items]
2,017	$ 434
2,018	434
2,019	434
2,020	434
2,021	434
Thereafter	2,601
Total minimum lease payments	4,771
Less interest included in payments above	(1,462)
Present value of minimum lease payments	3,309
Autocam [Member]
Debt Instrument [Line Items]
2,017	3,521
2,018	2,530
2,019	803
2,020	0
2,021	0
Thereafter	0
Total minimum lease payments	6,854
Less interest included in payments above	(282)
Present value of minimum lease payments	$ 6,572

Employee Benefit Plans - Additi

Employee Benefit Plans - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Minimum age for IRS catch up provision limit	50 years
Vesting percentage	100.00%
Matching contribution, Amount	$ 2.3	$ 0.2	$ 0.8
Severance indemnities paid to the pension fund	1/13.5 of the gross salaries
Measurement date	December 31
Discount rates assumed for calculating the actuarial present value	1.60%	2.20%
Compensation growth rate	3.00%	3.00%
Assumed rate of return on assets of the Pension Plan	2.00%
Targeted goal of allocating plan assets	We have a targeted goal of allocating plan assets one-third to equity and two-thirds to fixed income securities.
Expected funding obligation under pension plan in 2017	$ 0.1
Equity Securities [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Actual allocations of pension plan assets	35.00%
Fixed Income Securities [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Actual allocations of pension plan assets	65.00%
Minimum [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation to the plans	1.00%
Award for employees	25 years
Maximum [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Compensation to the plans	60.00%
Award for employees	40 years

Employee Benefit Plans - Schedu

Employee Benefit Plans - Schedule of Changes to Post-Employment Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Beginning balance	$ 5,189	$ 6,024
Amounts accrued	135	53
Payments to employees/government managed plan	(452)	(266)
Foreign currency impacts	(165)	(622)
Ending balance	$ 4,707	$ 5,189

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Projected Benefit Obligation Information for Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation at measurement date	$ 949	$ 950
Effect of salary increases	533	494
Projected benefit obligation at measurement date	1,482	1,444
Service and interest costs	113	103
Actuarial gains (losses)	118	(15)
Benefits paid	(141)	(22)
Effect of foreign currency translation gains and other	(50)	(159)
Projected benefit obligation at measurement date	1,482	1,444
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation at date of acquisition	$ 1,444	$ 1,537

Employee Benefit Plans - Summ69

Employee Benefit Plans - Summary of Net Periodic Benefit Cost Information for Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Service and interest costs	$ 113	$ 103
Expected return on plan assets	(10)	(11)
Amortization of prior service costs	27	28
Net periodic benefit cost	$ 130	$ 120

Employee Benefit Plans - Sche70

Employee Benefit Plans - Schedule of Expected Benefit Payments under Pension Plan (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Rolling Maturity [Abstract]
2,017	$ 14
2,018	7
2,019	0
2,020	25
2,021	9
2022-2026	213
Total benefit payments	$ 268

Employee Benefit Plans - Summ71

Employee Benefit Plans - Summary of Net Plan Asset Information for Pension Plan (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plans and Other Postretirement Benefit Plans Disclosures [Abstract]
Plan assets at fair value at measurement date	$ 515	$ 589	$ 426	$ 515
Projected benefit obligations at measurement date			(1,482)	(1,444)
Funded status			$ (1,056)	$ (929)
Plan assets at fair value at date of acquisition	515	589
Actual return on plan assets	64	9
Benefits paid	(141)	(22)
Effect of foreign currency translation gains	(13)	(61)
Plan assets at fair value at measurement date	$ 426	$ 515

Stock Based Compensation - Addi

Stock Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 4,270	$ 3,704	$ 2,595
Compensation expense related with stock options	825	915	1,274
Compensation expense for stock awards	$ 2,285	$ 2,399	$ 1,321
Maximum number of shares authorized to issued as options	2,300
Term life of options	10 years
Vesting period of stock issue	3 years	3 years	3 years
Number of options granted	167,000	54,600	108,620
Weighted average grant date fair value of the options granted	$ 5.02	$ 12.61	$ 9.48
Unrecognized compensation costs to be recognized for stock options	$ 600
Unrecognized compensation costs, period for recognition	2 years
Cash proceeds from the exercise of options	$ 2,600	$ 2,000	$ 1,700
Total intrinsic value of options exercised	$ 2,900	$ 2,600	$ 2,000
Common stock issued	152,510	114,475	114,300
Weighted average grant date fair value Per Share of the Stock Award	$ 11.39
Unrecognized share-based compensation expense	$ 2,000
Unrecognized compensation expense expected to be recognized	2 years
Performance Based Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 1,200	$ 400
Unrecognized compensation costs to be recognized for share-based awards	2,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation costs to be recognized for share-based awards	$ 1,000
TSR Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted	101,165	35,775
Weighted average grant date fair value of the options granted	$ 9.38	$ 28.61
Percentage of shares issuable based on threshold performance	50.00%
Percentage of shares issuable based on target performance	100.00%
Percentage of shares issuable based on maximum performance	150.00%
ROIC Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of options granted	101,165	35,775
Weighted average grant date fair value of the options granted	$ 11.31	$ 25.16
Percentage of shares issuable based on threshold performance	35.00%
Percentage of shares issuable based on target performance	100.00%
Percentage of shares issuable based on maximum performance	150.00%
Key Employees [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock issue	3 years
Non-executive Directors [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period of stock issue	1 year
Selling, General and Administrative Expense [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 4,300	$ 3,700	$ 2,600
Selling, General and Administrative Expense [Member] | Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		200	200
Share-based compensation expense, pre-tax		$ 100	$ 32

Stock Based Compensation - Weig

Stock Based Compensation - Weighted Average Assumptions Relevant to Determining the Fair Value at the Dates of Grant (Detail)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Term	6 years	6 years	6 years
Risk free interest rate	1.43%	1.43%	1.75%
Dividend yield	2.48%	1.11%	1.43%
Expected volatility	59.23%	59.22%	56.75%
Expected forfeiture rate	3.00%	3.00%	3.00%

Stock Based Compensation - Reco

Stock Based Compensation - Reconciliation of Option Activity (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Number of options, Outstanding, Beginning Balance	1,034,000
Number of Options, Granted	167,000	54,600	108,620
Number of Options, Exercised	(270,000)
Number of Options, Forfeited or expired	(34,000)
Number of Options, Outstanding, Ending Balance	897,000	1,034,000
Number of Options, Options Exercisable	686,000
Weighted-Average Exercise Price, Outstanding, Beginning Balance	$ 12.09
Weighted-Average Exercise Price, Granted	11.31
Weighted-Average Exercise Price, Exercised	10.49
Weighted-Average Exercise Price, Forfeited or expired	17.52
Weighted-Average Exercise Price, Outstanding, Ending Balance	12.22	$ 12.09
Weighted-Average Exercise Price, Options exercisable	$ 11.59
Weighted-Average Remaining Contractual Term, Outstanding	5 years 10 months 24 days
Weighted- Average Remaining Contractual Term, Options exercisable	4 years 10 months 24 days
Aggregate Intrinsic Value, Outstanding	$ 6,479
Aggregate Intrinsic Value, Options exercisable	$ 5,267

Stock Based Compensation - Sche

Stock Based Compensation - Schedule of Performance Based Awards Goals with Respect to TSR and ROIC (Detail)	12 Months Ended
	Dec. 31, 2016
TSR Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold Performance of Shares, percentage	50.00%
Target Performance of Shares, percentage	100.00%
Maximum Performance of Shares, percentage	150.00%
Threshold Performance, percentage	35.00%
Target Performance, percentage	50.00%
Maximum Performance, percentage	75.00%
ROIC Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold Performance of Shares, percentage	35.00%
Target Performance of Shares, percentage	100.00%
Maximum Performance of Shares, percentage	150.00%
Threshold Performance, percentage	11.00%
Target Performance, percentage	12.50%
Maximum Performance, percentage	14.00%

Goodwill, Net - Additional Info

Goodwill, Net - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of goodwill	$ 0	$ 0	$ 0
Accumulated Impairment of goodwill	$ 40,000,000	$ 40,000,000	$ 40,000,000

Goodwill, Net - Changes in Carr

Goodwill, Net - Changes in Carrying Amount of Goodwill (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Goodwill [Line Items]
Beginning Balance	$ 449,898	$ 83,941
Currency impacts	(2,854)	(838)
Goodwill acquired in acquisition		366,795
Adjustments to goodwill	(1,805)
Other adjustments	5,072
Ending Balance	450,311	449,898
Precision Bearing Components Group [Member]
Goodwill [Line Items]
Beginning Balance	9,111	9,949
Currency impacts	(202)	(838)
Ending Balance	8,909	9,111
Autocam Precision Components Group [Member]
Goodwill [Line Items]
Beginning Balance	73,992	73,992
Currency impacts	(601)
Other adjustments	(2,674)
Ending Balance	70,717	73,992
Precision Engineered Products Group [Member]
Goodwill [Line Items]
Beginning Balance	366,795
Currency impacts	(2,051)
Goodwill acquired in acquisition		366,795
Adjustments to goodwill	(1,805)
Other adjustments	7,746
Ending Balance	$ 370,685	$ 366,795

Intangible Assets, Net - Summar

Intangible Assets, Net - Summary of Changes in Carrying Amount of Intangible Assets, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Beginning balance	$ 282,169	$ 52,827
Additions		242,980
Amortization	(26,205)	(13,043)
Currency impacts	17	(595)
Ending balance	255,981	282,169
Precision Bearing Components Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	1,952	2,328
Amortization	(207)	(238)
Currency impacts	(27)	(138)
Ending balance	1,718	1,952
Autocam Precision Components Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	46,417	50,499
Amortization	(3,533)	(3,625)
Currency impacts	44	(457)
Ending balance	42,928	46,417
Precision Engineered Products Group [Member]
Finite-Lived Intangible Assets [Line Items]
Beginning balance	233,800
Additions		242,980
Amortization	(22,465)	(9,180)
Ending balance	$ 211,335	$ 233,800

Intangible Assets, Net - Additi

Intangible Assets, Net - Additional Information (Detail) $ in Thousands	12 Months Ended
	Dec. 31, 2016USD ($)BusinessContracts	Dec. 31, 2015USD ($)Business	Dec. 31, 2014USD ($)Business	Sep. 30, 2016USD ($)
Intangible Assets [Line Items]
Amortization expense	$ 26,205	$ 13,043
Restructuring and impairment charges
Finite lived intangible asset not subject to amortization	$ 255,981	$ 282,169	$ 52,827
Customer contract intangible assets related to the acquisition of RKF and Chelsea | Business	0	2	4
PEP [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition		$ 240,490		$ 240,490
Amortization expense	$ 19,700	$ 5,200
PEP [Member] | Customer Relationship [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 226,500
Estimated intangible assets useful life	12 years
PEP [Member] | Trade Name [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 6,300
Estimated intangible assets useful life	8 years
PEP [Member] | Backlog and Unfavorable Leasehold [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 7,700
Caprock [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	2,500
Amortization expense for the first year	200
Caprock [Member] | Customer Relationship [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 2,400
Estimated intangible assets useful life	12 years
Caprock [Member] | Trade Name [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 100
Estimated intangible assets useful life	1 year
Autocam Precision Components Group [Member]
Intangible Assets [Line Items]
Amortization expense for the first year	$ 3,500
Restructuring and impairment charges			$ 900
Amortization expense for the year two	3,500
Amortization expense for the year three	3,500
Amortization expense for the year four	3,500
Amortization expense for the year five	3,500
Autocam Precision Components Group [Member] | Customer Contracts [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 46,200
Autocam Precision Components Group [Member] | Customer Relationship [Member]
Intangible Assets [Line Items]
Estimated intangible assets useful life	15 years
Autocam Precision Components Group [Member] | Trade Name [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 4,100
Estimated intangible assets useful life	15 years
Autocam Precision Components Group [Member] | Developed Technology [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 900
Estimated intangible assets useful life	5 years
Autocam Precision Components Group [Member] | Leasehold Intangibles [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 400
Estimated intangible assets useful life	5 years
Autocam Precision Components Group [Member] | Whirlaway [Member]
Intangible Assets [Line Items]
Finite lived intangible asset not subject to amortization			$ 900
Precision Bearing Components Group [Member] | Customer Contracts [Member]
Intangible Assets [Line Items]
Intangible assets subject to acquisition	$ 2,700
Estimated intangible assets useful life	10 years
Amortization expense	$ 300
Customer contract intangible assets related to the acquisition of RKF and Chelsea | Contracts	2

Segment Information - Additiona

Segment Information - Additional Information (Detail) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016USD ($)	Sep. 30, 2016USD ($)	Jun. 30, 2016USD ($)	Mar. 31, 2016USD ($)	Dec. 31, 2015USD ($)	Sep. 30, 2015USD ($)	Jun. 30, 2015USD ($)	Mar. 31, 2015USD ($)	Dec. 31, 2016USD ($)Segment	Dec. 31, 2015USD ($)	Dec. 31, 2014USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | Segment									3
Business combinations net income (loss) during period from acquired business	$ 3,063	$ 4,147	$ 2,031	$ (1,299)	$ (25,015)	$ 4,630	$ 6,953	$ 6,001
Amortization of backlog intangibles									$ 26,205	$ 13,043
Autocam [Member]
Segment Reporting Information [Line Items]
Business combinations revenue during period from acquired business											$ 80,800
Business combinations net income (loss) during period from acquired business											3,700
Increase in cost of sales for inventory step-up											1,200
PEP [Member]
Segment Reporting Information [Line Items]
Business combinations revenue during period from acquired business										40,700
Business combinations net income (loss) during period from acquired business										(2,600)
Increase in cost of sales for inventory step-up										4,300
Amortization of backlog intangibles									$ 19,700	5,200
Corporate and Consolidations [Member] | Autocam [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										10,900	9,800
Corporate and Consolidations [Member] | Other Acquisitions [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										10,900	9,800
Corporate and Consolidations [Member] | PEP [Member]
Segment Reporting Information [Line Items]
Non-recurring costs related to the merger with PEP, Autocam and the other three acquisitions										$ 10,900	$ 9,800

Segment Information - Segment I

Segment Information - Segment Information (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net sales	$ 202,029	$ 204,961	$ 214,272	$ 212,226	$ 183,854	$ 154,824	$ 164,856	$ 163,746	$ 833,488	$ 667,280	$ 488,601
Depreciation and amortization									62,488	44,482	22,146
Income from operations	12,096	$ 18,727	$ 16,703	$ 11,874	(10,848)	$ 10,122	$ 13,589	$ 13,934	59,400	26,797	27,687
Interest Expense									63,154	29,899	10,895
Income tax (benefit) expense									(9,313)	(10,518)	5,786
Net income (Loss)									7,942	(7,431)	8,217
Assets	1,360,386				1,380,567				1,360,386	1,380,567	712,713
Expenditures for long-lived assets									43,820	38,553	27,602
Precision Bearing Components Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									248,534	261,837	278,026
Depreciation and amortization									11,676	11,496	12,000
Income from operations									22,985	26,310	31,872
Assets	220,152				215,163				220,152	215,163	214,291
Expenditures for long-lived assets									11,926	15,111	10,941
PEP [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									258,816	77,183	33,351
Depreciation and amortization									28,020	11,295	1,160
Income from operations									34,744	(3,718)	1,231
Assets	715,575				743,191				715,575	743,191	17,196
Expenditures for long-lived assets									5,352	728	673
Autocam Precision Components Group [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales									326,138	328,260	177,224
Depreciation and amortization									22,189	21,472	9,070
Income from operations									29,516	31,700	15,732
Assets	416,490				417,853				416,490	417,853	444,548
Expenditures for long-lived assets									23,077	21,341	10,947
Corporate and Consolidations [Member]
Segment Reporting Information [Line Items]
Depreciation and amortization									603	219	(84)
Income from operations									(27,845)	(27,495)	(21,148)
Interest Expense									63,154	29,899	10,895
Income tax (benefit) expense									(9,313)	(10,518)	5,786
Net income (Loss)									7,942	(7,431)	8,217
Assets	$ 8,169				$ 17,319				8,169	17,319	36,678
Expenditures for long-lived assets									$ 3,465	$ 1,373	$ 5,041

Segment Information - Revenue f

Segment Information - Revenue from External Customers and Long-lived Assets (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 202,029	$ 204,961	$ 214,272	$ 212,226	$ 183,854	$ 154,824	$ 164,856	$ 163,746	$ 833,488	$ 667,280	$ 488,601
Property, plant and equipment, net	322,953				318,968				322,953	318,968	278,442
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									456,102	326,747	204,360
Property, plant and equipment, net	176,632				183,226				176,632	183,226	129,232
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									172,895	170,921	167,665
Property, plant and equipment, net	78,664				77,147				78,664	77,147	82,783
Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									102,853	86,564	58,470
Property, plant and equipment, net	33,867				35,345				33,867	35,345	32,848
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									10,980	9,759	8,657
Mexico [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									54,390	39,118	25,900
Property, plant and equipment, net	6,308				2,971				6,308	2,971	2,637
South America [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									36,268	34,171	23,549
Property, plant and equipment, net	27,482				20,279				27,482	20,279	30,942
All Foreign Countries [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales									377,386	340,533	284,241
Property, plant and equipment, net	$ 146,321				$ 135,742				$ 146,321	$ 135,742	$ 149,210

Income Taxes - Income (Loss) Be

Income Taxes - Income (Loss) Before Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income (loss) before provision (benefit) for income taxes:
United States	$ (32,498)	$ (42,450)	$ (9,341)
Foreign	25,189	19,500	22,513
Income (loss) before provision (benefit) for income taxes and share of net income from joint venture	$ (7,309)	$ (22,950)	$ 13,172

Income Taxes - Additional Infor

Income Taxes - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2016USD ($)Business	Dec. 31, 2015USD ($)Business	Oct. 19, 2015USD ($)	Dec. 31, 2014USD ($)Business	Aug. 29, 2014USD ($)
Income Taxes [Line Items]
Loss realized from continuing operation		$ 32,498	$ 42,450		$ 9,341
Acquisition related cost of which loss realized			11,682		9,248
Acquisition related cost non - deductible			$ 3,800		$ 6,000
U.S. federal statutory rate		34.00%	34.00%		34.00%
Effective tax rate on non deductible expense		127.00%	46.00%		44.00%
Effective tax rate excluding effect of foreign earnings		45.00%
Foreign tax credit expiration					$ 1,300
Non-deductible mergers and acquisition costs			$ 1,299		1,971
Non-U.S. earnings taxed at different rates		$ 2,938	2,308		1,714
Deferred liability net of tax	$ 110,021	99,591	110,021		41,347
Deferred tax asset valuation allowance change in amount net		1,700
Deferred tax asset valuation allowance amount decrease		$ 200
Valuation allowance on foreign tax credits	2,400		$ 2,400		$ 1,400
Tax credit expiration date					Dec. 31, 2014
Number of acquisitions | Business		0	2		4
Unrecognized tax benefits		$ 4,700
Additions for tax positions of prior years		179	$ 2,516		$ 3,589
Additional foreign interest and penalties		1,100
State Net Operating Loss Carryforwards [Member]
Income Taxes [Line Items]
Deferred tax asset valuation allowance amount increase		1,900
Selling, General and Administrative Expense [Member]
Income Taxes [Line Items]
Acquisition related cost of which loss realized			11,700
Cost of Products Sold [Member]
Income Taxes [Line Items]
Acquisition related cost of which loss realized			7,500
Write Off of Debt Issuance Costs [Member]
Income Taxes [Line Items]
Acquisition related cost of which loss realized			18,700
Autocam [Member]
Income Taxes [Line Items]
Deferred liability net of tax					43,800
Additions for tax positions of prior years						$ 2,800
PEP [Member]
Income Taxes [Line Items]
Acquisition related cost of which loss realized	18,700
Deferred liability net of tax	87,600		87,600
Additions for tax positions of prior years				$ 2,200
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Interest accrued on income taxes	30	65	30		31
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Interest accrued on income taxes	$ 300	$ 200	$ 300		17
United States [Member]
Income Taxes [Line Items]
Acquisition related cost of which loss realized					$ 14,800

Income Taxes - Income Tax Expen

Income Taxes - Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Current:
U.S. Federal	$ 0	$ 0	$ 0
State	1,017	420	37
Foreign	6,968	5,940	7,082
Total current expense	7,985	6,360	7,119
Deferred:
U.S. Federal	(11,033)	(13,391)	1,625
State	(6,440)	(1,869)	(382)
U.S. deferred tax valuation allowance	1,882		(1,434)
Foreign	(1,707)	(1,618)	(1,142)
Total deferred expense (benefit)	(17,298)	(16,878)	(1,333)
Total expense (benefit)	$ (9,313)	$ (10,518)	$ 5,786

Income Taxes - Income Tax Exp86

Income Taxes - Income Tax Expense (Benefit) (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax adjustments	$ 998	$ 998

Income Taxes - Reconciliation o

Income Taxes - Reconciliation of Income Taxes Based on U.S. Federal Statutory Rate (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income taxes at the federal statutory rate	$ (2,490)	$ (7,803)	$ 4,478
Decrease in U.S. valuation allowance	1,882		(1,434)
Foreign tax credit (additions) expiration	(2,545)	(1,343)	2,736
State taxes, net of federal taxes	(1,558)	(1,592)	(362)
Non-U.S. earnings taxed at different rates	(2,938)	(2,308)	(1,714)
Non-deductible mergers and acquisition costs		1,299	1,971
R&D Tax credit	(282)	(623)	(529)
Change in uncertain tax positions	(994)
Other permanent differences, net	(388)	1,852	640
Total expense (benefit)	$ (9,313)	$ (10,518)	$ 5,786

Income Taxes - Tax Effects of T

Income Taxes - Tax Effects of Temporary Differences (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred income tax liabilities:
Tax in excess of book depreciation	$ 43,336	$ 42,345	$ 35,411
Goodwill	1,580	1,554	1,949
Intangible assets	86,492	91,947	15,944
Other deferred tax liabilities	1,771	897	1,924
Gross deferred income tax liabilities	133,179	136,743	55,228
Deferred income tax assets:
Goodwill	1,165	1,666	2,411
Inventories	960	4,490	2,035
Pension/Personnel accruals	1,602	2,778	3,029
Net operating loss carry forwards	10,296	8,313	1,196
Foreign tax credits	5,759	3,242	290
Guarantee claim deduction	414	1,141	1,141
Credit carry forwards	4,581	4,958	1,853
Accruals and reserves	1,741
Other deferred tax assets	11,160	2,510	1,926
Gross deferred income tax assets	37,678	29,098	13,881
Valuation allowance on deferred tax assets	(4,090)	(2,376)		$ (1,434)
Net deferred income tax assets	33,588	26,722	13,881
Net deferred income tax assets	0	0	0
Net deferred income tax liabilities	$ (99,591)	$ (110,021)	$ (41,347)

Income Taxes - Tax Effects of89

Income Taxes - Tax Effects of Temporary Differences (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Non-current deferred tax liabilities adjustments	$ 4,469	$ (1,444)

Income Taxes - Summary of Activ

Income Taxes - Summary of Activity in Total Valuation Allowances (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Balance at Beginning of Year	$ 2,376		$ 1,434
Additions	1,882	$ 2,376
Recoveries	(168)		$ (1,434)
Balance at End of Year	$ 4,090	$ 2,376

Income Taxes - Summary of Recon

Income Taxes - Summary of Reconciliation of Beginning and Ending Amounts of Unrecognized Tax Benefits, Excluding Interest and Penalties (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Beginning balance	$ 5,724	$ 3,834	$ 873
Additions for tax positions of prior years	179	2,516	3,589
Reductions for tax positions of prior years	(1,162)	(626)	(628)
Ending balance	$ 4,741	$ 5,724	$ 3,834

Reconciliation of Net Income 92

Reconciliation of Net Income (Loss) Per Share - Summary of Reconciliation of Net Income (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Earnings Per Share [Abstract]
Net income (Loss)									$ 7,942	$ (7,431)	$ 8,217
Weighted average shares outstanding	27,241	27,159	27,024	26,869	26,840	26,839	19,215	18,996	27,016	21,181	17,887
Effect of dilutive stock options	180	163	163			328	367	384	138		366
Diluted shares outstanding	27,421	27,322	27,187	26,869	26,840	27,167	19,582	19,380	27,154	21,181	18,253
Basic net income (loss) per share	$ 0.11	$ 0.15	$ 0.08	$ (0.05)	$ (0.93)	$ 0.17	$ 0.36	$ 0.32	$ 0.29	$ (0.35)	$ 0.46
Diluted net income (loss) per share	$ 0.11	$ 0.15	$ 0.07	$ (0.05)	$ (0.93)	$ 0.17	$ 0.36	$ 0.31	$ 0.29	$ (0.35)	$ 0.45

Reconciliation of Net Income 93

Reconciliation of Net Income (Loss) Per Share - Additional Information (Detail) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2014
Earnings Per Share [Abstract]
Anti-dilutive options	163,200	98,000
Anti-dilutive securities excluded from computation of earnings per share minimum price range	$ 19.63	$ 19.63
Anti-dilutive securities excluded from computation of earnings per share maximum price range one	$ 25.16	$ 22.49

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Contingencies And Commitments [Line Items]
Rent expenses	$ 8,600,000	$ 5,800,000	$ 4,500,000
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

Commitments and Contingencies95

Commitments and Contingencies - Schedule by Year of Future Minimum Lease Payments (Detail) $ in Thousands	Dec. 31, 2016USD ($)
Commitments and Contingencies Disclosure [Abstract]
2,017	$ 7,824
2,018	6,830
2,019	5,785
2,020	4,882
2,021	2,802
Thereafter	3,149
Total minimum lease payments	$ 31,272

Investment in Non-Consolidate96

Investment in Non-Consolidated Joint Venture - Additional Information (Detail) - USD ($)	3 Months Ended								4 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Dividend declared by joint venture									$ 0			$ 0
Net sales	$ 202,029,000	$ 204,961,000	$ 214,272,000	$ 212,226,000	$ 183,854,000	$ 154,824,000	$ 164,856,000	$ 163,746,000		$ 833,488,000	$ 667,280,000	488,601,000
Net income	$ 3,063,000	$ 4,147,000	$ 2,031,000	$ (1,299,000)	(25,015,000)	$ 4,630,000	$ 6,953,000	$ 6,001,000
Wuxi Weifu Autocam Precision Machinery Company, Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Investment in joint venture	49.00%									49.00%
Autocam [Member]
Schedule of Equity Method Investments [Line Items]
Dividend declared by joint venture					3,700,000				2,800,000		3,700,000	2,800,000
Dividends paid by the joint venture										$ 3,700,000	2,800,000
Net sales										100,000	100,000
Amount due from joint venture					$ 200,000						$ 200,000
Autocam [Member] | Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Investment in joint venture					49.00%						49.00%
Net sales									36,000	65,700,000	$ 55,400,000	50,500,000
Amount due from joint venture	$ 100,000								$ 200,000	100,000		200,000
Net income										$ 13,100,000	$ 11,100,000	$ 9,000,000
Withholding tax levied by Chinese government											10.00%

Investment in Non-Consolidate97

Investment in Non-Consolidated Joint Venture - Components of Joint Venture Investment (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Equity Method Investments [Line Items]
Beginning Balance	$ 38,462
Capital contributions		$ 1,999
Our share of cumulative earnings	5,938	5,001	$ 831
Ending Balance	40,694	38,462
Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Beginning Balance	38,462	34,331	35,595
Capital contributions		1,999
Dividends received		(2,868)	(2,538)
Our share of cumulative earnings	6,427	5,440	1,646
Dividends declared and paid by joint venture	(3,706)
Accretion of basis difference from purchase accounting	(489)	(440)	(372)
Ending Balance	$ 40,694	$ 38,462	$ 34,331

Investment in Non-Consolidate98

Investment in Non-Consolidated Joint Venture - Summarized Balance Sheet Information for Joint Venture (Detail) - Joint Venture [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Current assets	$ 31,295	$ 24,663
Non-current assets	22,522	22,847
Total assets	53,817	47,510
Current liabilities	13,549	11,171
Total liabilities	$ 13,549	$ 11,171

Quarterly Results of Operatio99

Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 202,029	$ 204,961	$ 214,272	$ 212,226	$ 183,854	$ 154,824	$ 164,856	$ 163,746	$ 833,488	$ 667,280	$ 488,601
Income from operations	12,096	18,727	16,703	11,874	(10,848)	10,122	13,589	13,934	59,400	26,797	27,687
Net income	3,063	4,147	2,031	(1,299)	(25,015)	4,630	6,953	6,001
Comprehensive income (loss)	$ (10,212)	$ 8,740	$ (973)	$ 4,418	$ (28,929)	$ (2,121)	$ 10,955	$ (11,856)	$ 1,973	$ (31,951)	$ (9,945)
Basic net income per share	$ 0.11	$ 0.15	$ 0.08	$ (0.05)	$ (0.93)	$ 0.17	$ 0.36	$ 0.32	$ 0.29	$ (0.35)	$ 0.46
Diluted net income per share	$ 0.11	$ 0.15	$ 0.07	$ (0.05)	$ (0.93)	$ 0.17	$ 0.36	$ 0.31	$ 0.29	$ (0.35)	$ 0.45
Weighted average shares outstanding:
Basic number of shares	27,241	27,159	27,024	26,869	26,840	26,839	19,215	18,996	27,016	21,181	17,887
Effect of dilutive stock options	180	163	163			328	367	384	138		366
Diluted number of shares	27,421	27,322	27,187	26,869	26,840	27,167	19,582	19,380	27,154	21,181	18,253

Quarterly Results of Operati100

Quarterly Results of Operations (Unaudited) - Summary of Unaudited Quarterly Results of Operations (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]
Comprehensive income adjustment	$ 3,104	$ (2,542)	$ (517)	$ 582	$ (955)	$ 345	$ 166	$ 91
Income tax adjustments	$ 998								$ 998

Quarterly Results of Operati101

Quarterly Results of Operations (Unaudited) - Additional Information (Detail) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2015USD ($)	Dec. 31, 2016Business	Dec. 31, 2015USD ($)Business	Dec. 31, 2014USD ($)Business
Interim Reporting [Line Items]
Number of acquisitions | Business		0	2	4
Merger and acquisition related costs before tax			$ 11,682	$ 9,248
PEP [Member]
Interim Reporting [Line Items]
Merger and acquisition related costs before tax	$ 18,700
Merger and acquisition related costs after tax	11,600
Debt issuance Cost Write Off Before Tax	18,700
Debt issuance Cost Write Off After Tax	$ 12,000

Accumulated Other Comprehens102

Accumulated Other Comprehensive Income - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity [Abstract]
Other comprehensive income (loss) due to foreign currency translations	$ 9,000	$ 21,900	$ 17,700
Change in fair value of interest rate hedge	$ 3,015	$ (2,584)	$ (431)

Fair Value Measurements - Addit

Fair Value Measurements - Additional Information (Detail) - USD ($)	Dec. 16, 2014	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Fair value of fixed-rate debt			$ 265,300,000
Fair value of fixed-rate debt, net of debt issuance costs			$ 260,400,000
Amount of interest rate swap	$ 150,000,000
Description of term of interest rate swap			Effective December 16, 2014, we entered into a $150 million swap that went into effect on December 29, 2015 (one year delayed start), at which time our rate was locked at 6.966% until December 31, 2018.
Locked interest rate	6.966%		6.466%
Derivative maturity date	Dec. 31, 2018		Dec. 31, 2018
Derivative inception date	Dec. 29, 2015
Derivative in Net liability position			$ 2,900,000
Gain or loss related to interest rate swaps		$ 600,000	1,400,000	$ (3,015,000)
Interest Rate cash flow hedge liability at fair value			150,000,000
Gain or loss related to interest rate swaps			300,000
Amount to be reclassified from accumulated and other comprehensive income in next twelve months			0
Cash payments related to the interest rates swap			1,800,000
Accumulated Other Comprehensive Income [Member]
Derivatives, Fair Value [Line Items]
Gain or loss related to interest rate swaps			$ 0
Senior Secured Term Loan B [Member]
Derivatives, Fair Value [Line Items]
Interest rate		0.75%
Minimum [Member] | Senior Secured Term Loan B [Member]
Derivatives, Fair Value [Line Items]
Interest rate			0.75%
Minimum [Member] | Senior Secured Term Loan B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivatives, Fair Value [Line Items]
Interest rate			0.75%
Maximum [Member] | Senior Secured Term Loan B [Member] | London Interbank Offered Rate (LIBOR) [Member]
Derivatives, Fair Value [Line Items]
Interest rate			1.00%

Fair Value Measurements - Finan

Fair Value Measurements - Financial Assets and Liabilities Valued on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Derivatives, Fair Value [Line Items]
Derivative asset-current	$ 69	$ 388
Derivative asset-noncurrent	6	368
Derivative liability-current	(1,903)	(2,098)
Derivative liability-noncurrent	(1,028)	(1,673)
Derivative assets and liabilities, Total	(2,856)	(3,015)
Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Fair Value [Line Items]
Derivative asset-current	69	388
Derivative asset-noncurrent	6	368
Derivative liability-current	(1,903)	(2,098)
Derivative liability-noncurrent	(1,028)	(1,673)
Derivative assets and liabilities, Total	$ (2,856)	$ (3,015)

Fair Value Measurements - Deriv

Fair Value Measurements - Derivatives' Cash Flow Hedging Relationships (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount recognized in Other Comprehensive Income (effective portion)	$ 600	$ 1,400	$ (3,015)
Pre-tax amount of gain/(loss) reclassified from AOCI in Net Income (effective portion)		(1,393)
Interest Expense [Member] | Forward Starting Interest Rate Swap Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount recognized in Other Comprehensive Income (effective portion)			$ (3,015)
Pre-tax amount of gain/(loss) reclassified from AOCI in Net Income (effective portion)		$ (1,393)

Equity Offering - Additional In

Equity Offering - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Jul. 01, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity Offering [Abstract]
Number of shares of common stock sold	7,590,000
Public offering price per share	$ 24
Net proceeds to NN from the offering	$ 173,100
Repayment of term loan and ABL facilities	$ 148,700	$ 30,000	$ 401,438	$ 40,880