NN (NNBR) 10-Q 8 Aug 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Jun. 30, 2014	Aug. 05, 2014
Document And Entity Information [Abstract]	'	'
Document Type	'10-Q	'
Amendment Flag	'false	'
Document Period End Date	30-Jun-14	'
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus	'Q2	'
Entity Registrant Name	'NN INC	'
Entity Central Index Key	'0000918541	'
Current Fiscal Year End Date	'--12-31	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	17,785,621

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]	'	'	'	'
Net sales	$106,680	$96,305	$209,208	$190,102
Cost of products sold (exclusive of depreciation and amortization shown separately below)	84,285	75,751	164,569	150,268
Selling, general and administrative	10,074	8,339	20,104	17,445
Depreciation and amortization	4,084	4,294	7,961	8,825
Loss on disposal of assets	'	1	'	5
Income from operations	8,237	7,920	16,574	13,559
Interest expense	551	709	1,115	1,494
Other expense (income), net	129	-214	212	365
Income before provision for income taxes	7,557	7,425	15,247	11,700
Provision for income taxes	2,357	2,655	4,809	4,059
Net income	5,200	4,770	10,438	7,641
Other comprehensive income:	'	'	'	'
Foreign currency translation (loss) gain	-725	1,386	-1,364	-419
Comprehensive income	$4,475	$6,156	$9,074	$7,222
Basic income per common share:	$0.29	$0.28	$0.59	$0.45
Weighted average shares outstanding	17,779	17,136	17,700	17,082
Diluted income per common share:	$0.29	$0.28	$0.58	$0.45
Weighted average shares outstanding	18,172	17,172	18,054	17,115
Cash dividends per common share	$0.07	$0.06	$0.14	$0.06

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (Unaudited) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Current assets:	'	'
Cash	$5,812	$3,039
Accounts receivable, net of allowance for doubtful accounts of $503 and $445, respectively	80,740	58,929
Inventories	61,541	54,530
Other current assets	9,934	9,176
Total current assets	158,027	125,674
Property, plant and equipment, net	132,681	121,089
Goodwill, net	9,384	8,624
Intangible asset, net	2,724	900
Non-current deferred tax assets	1,235	2,713
Other non-current assets	3,369	3,402
Total assets	307,420	262,402
Current liabilities:	'	'
Accounts payable	48,540	40,687
Accrued salaries, wages and benefits	13,408	11,761
Current maturities of long-term debt	4,000	10,477
Income taxes payable	3,300	1,340
Other current liabilities	6,088	5,119
Total current liabilities	75,336	69,384
Non-current deferred tax liabilities	3,962	3,844
Long-term debt, net of current portion	53,500	26,000
Other non-current liabilities	10,783	10,414
Total liabilities	143,581	109,642
Total stockholders' equity	163,839	152,760
Total liabilities and stockholders' equity	$307,420	$262,402

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Statement Of Financial Position [Abstract]	'	'
Allowance for doubtful accounts	$503	$445

Condensed_Consolidated_Stateme1

Condensed Consolidated Statement of Changes in Stockholders' Equity (Unaudited) (USD $)	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Non-controlling Interest [Member]	Accumulated Other Comprehensive Income [Member]
In Thousands
Beginning Balance at Dec. 31, 2013	$152,760	$176	$63,126	$65,929	$0	$23,529
Beginning Balance, Shares at Dec. 31, 2013	'	17,630	'	'	'	'
Net income	10,438	'	'	10,438	'	'
Dividends declared	-2,480	'	'	-2,480	'	'
Shares issued for option exercises	640	1	639	'	'	'
Shares issued for option exercises, Shares	65	64	'	'	'	'
Stock option expense	711	'	711	'	'	'
Restricted stock expense	575	'	575	'	'	'
Restricted stock expense, Shares	'	92	'	'	'	'
Foreign currency translation loss	-1,364	'	'	'	'	-1,364
Non-controlling interest	2,559	'	'	'	2,559	'
Ending Balance at Jun. 30, 2014	$163,839	$177	$65,051	$73,887	$2,559	$22,165
Ending Balance, Shares at Jun. 30, 2014	'	17,786	'	'	'	'

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Operating Activities:	'	'
Net income	$10,438	$7,641
Adjustments to reconcile net income to net cash provided by operating activities:	'	'
Depreciation and amortization	7,961	8,825
Amortization of debt issuance costs	216	337
Loss on disposal of assets	'	5
Share-based compensation expense	1,286	1,094
Changes in operating assets and liabilities:	'	'
Accounts receivable	-20,594	-16,036
Inventories	-4,736	-569
Accounts payable	6,939	3,190
Other assets and liabilities	4,191	4,357
Net cash provided by operating activities	5,701	8,844
Investing Activities:	'	'
Acquisition of property, plant and equipment	-5,812	-4,923
Cash paid to acquire business, net of cash received	-16,217	'
Proceeds from disposals of property, plant and equipment	'	17
Net cash used by investing activities	-22,029	-4,906
Financing Activities:	'	'
Repayment of short-term debt, net	-763	-87
Principal payments on capital lease	-73	-66
Proceeds from long-term debt, net	21,786	'
Repayment of long-term debt, net	'	-17,715
Dividends paid	-2,480	'
Proceeds from issuance of stock and exercise of stock options	640	186
Net cash provided (used) by financing activities	19,110	-17,682
Effect of exchange rate changes on cash flows	-9	-14
Net Change in Cash	2,773	-13,758
Cash at Beginning of Period	3,039	18,990
Cash at End of Period	$5,812	$5,232

Interim_Financial_Statements

Interim Financial Statements	6 Months Ended
	Jun. 30, 2014
Quarterly Financial Information Disclosure [Abstract]	'
Interim Financial Statements	'
	Note 1. Interim Financial Statements
	The accompanying condensed consolidated financial statements of NN, Inc. have not been audited, except that the condensed consolidated balance sheet at December 31, 2013 was derived from our audited consolidated financial statements. In our opinion, these financial statements reflect all adjustments necessary to fairly state the results of operations for the three and six month periods ended June 30, 2014 and 2013, our financial position at June 30, 2014 and December 31, 2013, and the cash flows for the six month periods ended June 30, 2014 and 2013 on a basis consistent with our audited financial statements. These adjustments are of a normal recurring nature and are, in the opinion of management, necessary for fair statement of the financial position and operating results for the interim periods. As used in this Quarterly Report on Form 10-Q, the terms “NN”, “the Company”, “we”, “our”, or “us” mean NN, Inc. and its subsidiaries.
	Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted from the interim financial statements presented in this Quarterly Report on Form 10-Q. These unaudited, condensed and consolidated financial statements should be read in conjunction with our audited consolidated financial statements and the notes thereto included in our most recent Annual Report on Form 10-K for the year ended December 31, 2013 which we filed with the Securities and Exchange Commission on March 14, 2014. The results for the three and six month periods ended June 30, 2014 are not necessarily indicative of results for the year ending December 31, 2014 or any other future periods.

Acquisitions

Acquisitions	6 Months Ended
	Jun. 30, 2014
Business Combinations [Abstract]	'
Acquisitions	'
	Note 2. Acquisitions
	RFK Valjcici d. d. Konjic (“RFK”)
	On June 20, 2014, we acquired 79.2% of the outstanding shares of RFK Valjcici d. d. Konjic (“RFK”) for $9,756 in cash. RFK is a manufacturer of tapered rollers with operations in Konjic, Bosnia & Herzegovina. Its products, while complementary to NN’s existing roller bearing components, will broaden the Company’s product offering and allow penetration into adjacent markets. NN expects to acquire the remaining shares of RFK in the near future. In addition, we incurred fees from third parties as part of the purchase of $102, which were expensed as incurred in Selling, general and administrative expense within the Condensed Consolidated Statements of Comprehensive Income. The results of the operations of RFK have been consolidated with NN, Inc. since the date of acquisition. RFK has contributed revenues and net income of approximately $210 and $22, respectively, from the date of acquisition to June 30, 2014.
	RFK, a listed company on the Sarajevo Stock Exchange, was founded in 1984 and is expected to have sales of approximately $12.0 million in 2014. RFK currently exports all of its products, predominately to customers serving the European truck, industrial vehicle and railway markets. NN will continue operations at the existing facilities in Bosnia & Herzegovina and will roll up the operations under our Metal Bearing Components Segment.
	The following table summarized the estimated fair values of assets acquired and liabilities assumed at the date of acquisition:
	Assets acquired and liabilities assumed on June 20, 2014
	Current assets	$	3,940
	Property, plant, and equipment		7,684
	Intangible assets subject to amortization		1,740
	Goodwill		732
	Total assets acquired	$	14,096
	Current liabilities	$	1,781
	Total liabilities assumed	$	1,781
	Net asset acquired	$	12,315
	In addition, we have reported non-controlling interest of $2,559 for RFK representing the fair value of the 20.8% of the shares outstanding we do not own as of June 30, 2014. The accounting for the business combination is based on currently available information and is considered preliminary. We are in the process of finalizing fair market valuations of all the net assets acquired given the purchase was made very close to the end of the quarter. We expect this process to be complete during the third quarter of 2014 and plan to disclose the final allocation within our quarterly report on Form 10-Q for the third quarter of 2014.
	The intangible assets subject to amortization are for customer contracts and trade names totaling $1,740 and have a weighted average useful life of approximately 10 years. Goodwill of $732 arising from the acquisition is attributable primarily to the assembled workforce of the acquired business and strategic opportunities that are expected to arise from the acquisition of RFK.
	VS Assets Purchase
	On January 30, 2014, we purchased the majority of the operating assets of V-S Industries, V-S Precision, LLC and V-S Precision SA de DV (collectively referred to as “VS”) from the secured creditors of V-S Industries for $5,580 in cash and paid $1,840 for certain assumed liabilities. In addition, we incurred fees from third parties as part of the purchase of $716, which were expensed as incurred in Selling, general and administrative expense within the Condensed Consolidated Statements of Comprehensive Income. Finally, we incurred non-recurring costs directly related to the acquisition of $341 for integration. The results of the operations of VS have been consolidated with NN, Inc. since the date of acquisition. VS has contributed revenues and net loss of approximately $5,919 and $(950), including the integration costs, respectively, from the date of acquisition to June 30, 2014.
	VS is a precision metal components manufacturer that supplies customers in a variety of industries including electric motors, HVAC, power tools, automotive and medical. The acquisition of VS will provide us with a complementary, but broader product offering and will allow penetration into adjacent markets. VS has two locations in Wheeling, Illinois and Juarez, Mexico and will roll up under the Precision Metal Components Segment.
	The following table summarized the fair values of assets acquired and liabilities assumed at the date of acquisition. We finalized the fair market valuations of all of the assets acquired and liabilities assumed at the acquisition date during the second quarter of 2014. The final allocation is disclosed below:
	Assets acquired and liabilities assumed on January 30, 2014	March 31,		2014			June 30,
		2014		adjustments			2014
				to fair value
	Current assets	$	1,263	$	144		$	1,407
	Property, plant, and equipment		6,902		164			7,066
	Intangible assets subject to amortization		75		—			75
	Goodwill		244		(244	)		—
	Total assets acquired	$	8,484	$	64		$	8,548
	Current liabilities	$	2,904	$	64		$	2,968
	Total liabilities assumed	$	2,904	$	64		$	2,968
	Net asset acquired	$	5,580	$	—		$	5,580

Inventories

Inventories	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Inventories	'
	Note 3. Inventories
	Inventories are comprised of the following:
		June 30,		December 31,
		2014		2013
	Raw materials	$	19,380	$	15,448
	Work in process		11,491		9,672
	Finished goods		30,670		29,410
		$	61,541	$	54,530
	Inventories on consignment at customer locations as of June 30, 2014 and December 31, 2013 totaled $5,733 and $4,735, respectively.
	Inventories are stated at the lower of cost or market. Cost is determined using the average cost method. The inventory valuations above were developed using normalized production capacities for each of our manufacturing locations. Any costs from abnormal excess capacity or under-utilization of fixed production overheads are expensed in the period incurred and are not included as a component of inventory valuation.

Net_Income_Per_Share

Net Income Per Share	6 Months Ended
	Jun. 30, 2014
Earnings Per Share [Abstract]	'
Net Income Per Share	'
	Note 4. Net Income Per Share
	The difference between the basic weighted average shares outstanding and the diluted weighted average shares outstanding for all periods reported are the effect of dilutive stock options calculated using the treasury stock method. The dilutive shares for the three and six month periods ended June 30, 2014 were 393 and 354, respectively. The dilutive shares for the three and six month periods ended June 30, 2013 were 36 and 33, respectively. There were no anti-dilutive options excluded from the dilutive shares outstanding for the three and six month periods ended June 30, 2014. Excluded from the dilutive shares outstanding for the three and six month periods ended June 30, 2013 were 1,027 of anti-dilutive options which had exercise prices ranging from $9.97 to $14.13.

Segment_Information

Segment Information	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	Note 5. Segment Information
	The segment information and the accounting policies of each segment are the same as those described in the notes to the consolidated financial statements entitled “Segment Information” and “Summary of Significant Accounting Policies and Practices,” respectively, included in our Annual Report on Form 10-K for the fiscal year ended December 31, 2013. We evaluate segment performance based on segment net income (loss). The 2013 segment net income (loss) amounts were amended to remove interest costs, net of taxes formerly allocated to the segments prior to the third quarter of 2013. We account for inter-segment sales and transfers at current market prices. We did not have any significant inter-segment transactions during the three and six month periods ended June 30, 2014 and 2013.
	(In Thousands of Dollars)	Metal Bearing		Precision		Plastic and		Corporate			Total
		Components		Metal		Rubber		and
		Segment		Components		Components		Consolidations
				Segment		Segment
	Three Months ended June 30, 2014
	Revenues from external customers	$	73,038	$	25,267	$	8,375	$	—		$	106,680
	Net income (loss)	$	5,808	$	1,457	$	267	$	(2,332	)	$	5,200
	Six Months ended June 30, 2014
	Revenues from external customers	$	143,938	$	49,005	$	16,265	$	—		$	209,208
	Net income (loss)	$	11,764	$	3,098	$	418	$	(4,842	)	$	10,438
	Total assets	$	227,313	$	54,529	$	17,718	$	7,860		$	307,420
	(In Thousands of Dollars)	Metal Bearing		Precision		Plastic and		Corporate and			Total
		Components		Metal		Rubber		Consolidations
		Segment		Components		Components
				Segment		Segment
	Three Months ended June 30, 2013
	Revenues from external customers	$	65,869	$	21,543	$	8,893	$	—		$	96,305
	Net income (loss)	$	4,847	$	1,819	$	201	$	(2,097	)	$	4,770
	Six Months ended June 30, 2013
	Revenues from external customers	$	129,557	$	42,286	$	18,259	$	—		$	190,102
	Net income (loss)	$	8,871	$	2,868	$	460	$	(4,558	)	$	7,641
	Total assets	$	189,756	$	41,484	$	19,909	$	10,290		$	261,439

PostEmployment_Benefit_Liabili

Post-Employment Benefit Liabilities	6 Months Ended
	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Post-Employment Benefit Liabilities	'
	Note 6. 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. These plans are described below.
	In accordance with Italian law, we have an unfunded severance plan covering our Pinerolo Plant employees under which all employees at that location are entitled to receive severance indemnities upon termination of their employment.
	We have certain plans that cover our Veenendaal Plant employees that provide awards for employees who achieve 25 or 40 years of service and awards for employees upon retirement. The plans are 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 combined actual liabilities at June 30, 2014 and December 31, 2013, reported as a component of Other non-current liabilities in the Condensed Consolidated Balance Sheets.
		June 30,			December 31,
		2014			2013
	Beginning balance	$	6,920		$	6,930
	Amounts accrued		204			1,019
	Payments to employees/government managed plan		(148	)		(1,331	)
	Foreign currency impacts		(66	)		302
	Ending balance	$	6,910		$	6,920

LongTerm_Debt_and_ShortTerm_De

Long-Term Debt and Short-Term Debt	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Long-Term Debt and Short-Term Debt	'
	Note 7. Long-Term Debt and Short-Term Debt
	Long-term debt and short-term debt at June 30, 2014 and December 31, 2013 consisted of the following:
		June 30,		December 31,
		2014		2013
	Borrowings under our $100,000 revolving credit facility bearing interest at a floating rate equal to LIBOR (0.1875% at June 30, 2014) plus an applicable margin of 1.25% at June 30, 2014, expiring October 26, 2017.	$	37,500	$	10,763
	Borrowings under our $40,000 aggregate principal amount of fixed rate notes bore interest at a fixed rate of 4.89% and matured on April 26, 2014. Annual principal payments of $5,714 began on April 26, 2008 and extend through the date of maturity.		—		5,714
	Borrowings under our $20,000 aggregate principal amount of fixed rate notes bearing interest at a fixed rate of 4.64% maturing on December 20, 2018. Annual principal payments of $4,000 will begin on December 22, 2014 and extend through the date of maturity.		20,000		20,000
	Total debt		57,500		36,477
	Less current maturities of long-term debt		4,000		10,477
	Long-term debt, excluding current maturities of long-term debt	$	53,500	$	26,000
	The $100,000 revolving credit facility may be expanded upon our request with approval of the lenders by up to $35,000 under the same terms and conditions. The loan agreement contains customary restrictions on, among other things, additional indebtedness, liens on our assets, sales or transfers of assets, investments, issuance of equity securities, and merger, acquisition and other fundamental changes in our business including a “material adverse change” clause, which if triggered would give the lenders the right to accelerate the maturity of the debt. The facility has a $10,000 swing line feature to meet short term cash flow needs. Any borrowings under this swing line are considered short term. Costs associated with entering into the revolving credit facility were capitalized and will be amortized into interest expense over the life of the facility. As of June 30, 2014 and December 31, 2013, $1,404 and $1,617, respectively of net capitalized loan origination costs related to the revolving credit facility were recorded on the condensed consolidated balance sheet within other non-current assets.
	The $20,000 fixed rate agreements contain customary restrictions on, among other things, additional indebtedness, liens on our assets, sales or transfers of assets, investments, issuance of equity securities, and mergers, acquisitions and other fundamental changes in our business including a “material adverse change” clause, which if triggered would give the lenders the right to accelerate the maturity of the debt. We incurred costs as a result of issuing these notes which have been recorded on the condensed consolidated balance sheet within other non-current assets and are being amortized over the term of the notes. The unamortized balance at June 30, 2014 and December 31, 2013 was $30 and $34, respectively.

Goodwill_net

Goodwill, net	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Goodwill, net	'
	Note 8. Goodwill, net
	The changes in the carrying amount of goodwill, net for the six month period ended June 30, 2014 are as follows:
	(In Thousands of Dollars)	Metal Bearing
		Components
		Segment
	Balance as of January 1, 2014	$	8,624
	Currency translation impacts		28
	Goodwill acquired in acquisition		732
	Balance as of June 30, 2014	$	9,384
	The goodwill balance is tested for impairment on an annual basis during the fourth quarter and between annual tests if a triggering event occurs. As of June 30, 2014, there are no indications of impairment at the reporting units with a goodwill balance.
	The goodwill acquired in acquisition during 2014 within the Metal Bearing Components segment was acquired during the three months ended June 30, 2014 with the acquisition of RFK (see Note 2 of the Notes to Condensed Consolidated Financial Statements).

Intangible_Assets_Net

Intangible Assets, Net	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Intangible Assets, Net	'
	Note 9. Intangible Assets, Net
	The Precision Metal Components Segment has an indefinite lived intangible asset not subject to amortization of $900 related to the value of the trade names of Whirlaway. The intangible asset balance is tested for impairment on an annual basis during the fourth quarter and between annual tests if a triggering event occurs. There are no indicators of impairment for the intangible asset as of June 30, 2014.
	Additionally, the Precision Metal Components Segment acquired a customer contract intangible asset and proprietary software intangible assets related to the acquisition of VS during the six months ended of June 30, 2014 of $75. These intangible assets have a weighted average useful life of 10 years and are subject to amortization of approximately $8 a year (See Note 2 of the Notes to Condensed Consolidated Financial Statements).
	The Metal Bearing Components Segment acquired a customer contract intangible asset and a trade name intangible asset related to the acquisition of RFK during the six months ended June 30, 2014 of $1,749. These intangible assets have a weighted average useful life of 10 years and is subject to amortization of $175 per year. (See Note 2 of the Notes to Condensed Consolidated Financial Statements).

SharedBased_Compensation

Shared-Based Compensation	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Shared-Based Compensation	'
	Note 10. Shared-Based Compensation
	During the three and six month periods ended June 30, 2014 and 2013, approximately $714 and $1,286 in 2014 and $664 and $1,094 in 2013, respectively, of compensation expense was recognized in selling, general and administrative expense for all share-based awards. During the six month period ended June 30, 2014, there were 97 share awards and 98 options awards to non-executive directors, officers and certain other key employees. During the six month period ended June 30, 2013, there were 95 share awards and 354 options awards to non-executive directors, officers and certain other key employees.
	The restricted shares granted during the six month periods ended June 30, 2014 and 2013, vest pro-rata over three years. During the six month periods ended June 30, 2014 and 2013, we incurred $575 and $411, respectively, in expense related to restricted stock. The fair value of the shares issued was determined by using the grant date closing price of our common stock.
	We incurred $711 and $683 of stock option expense in the six month periods ended June 30, 2014 and 2013, respectively. The fair value of our options cannot be determined by market value, as our options are not traded in an open market. Accordingly, the Black Scholes financial pricing model is utilized to estimate the fair value.
	The following table provides a reconciliation of option activity for the six month period ended June 30, 2014:
	Options		Shares (000)			Weighted-		Weighted-		Aggregate
						Average		Average		Intrinsic Value
						Exercise		Remaining		$0
						Price		Contractual
								Term
	Outstanding at January 1, 2014			1,233		$	10.65
	Granted			98		$	19.69
	Exercised			(65	)	$	11.84
	Forfeited or expired			(8	)	$	12.62
	Outstanding at June 30, 2014			1,258		$	11.24		6.5	$	17,995	(1)
	Exercisable at June 30, 2014			882		$	10.89		5.5	$	12,964	(1)
	(1)	The intrinsic value is the amount by which the market price of our stock was greater than the exercise price of any individual option grant at June 30, 2014.

Provision_for_Income_Taxes

Provision for Income Taxes	6 Months Ended
	Jun. 30, 2014
Income Tax Disclosure [Abstract]	'
Provision for Income Taxes	'
	Note 11. Provision for Income Taxes
	For the six month periods ended June 30, 2014 and 2013, our effective tax rates were 32% and 35%, respectively. The difference between the U.S. federal statutory tax rate of 34% and our effective tax rates for the six months ended June 30, 2014 was primarily due to the effective tax rate being impacted by non-U.S. based earnings being taxed at lower rates.
	As of June 30, 2014, we do not foresee any significant changes to our unrecognized tax benefits within the next twelve months.

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2014
Commitments And Contingencies Disclosure [Abstract]	'
Commitments and Contingencies	'
	Note 12. Commitments and Contingencies
	All legal proceedings, with the exception of the bankruptcy of our German subsidiary discussed below, 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 recognized loss contingencies of approximately $0 and $200 at June 30, 2014 and December 31, 2013, respectively, which we believe are adequate to cover all probable liabilities to be incurred by all of the cases in the aggregate.
	As discussed more fully in our Annual Report on Form 10-K filed March 14, 2014, the ultimate impact on NN of our wholly owned German subsidiary Kugelfertigung Eltmann GbmH (“Eltmann” or “Eltmann Plant”) filing for bankruptcy will depend on the findings of the bankruptcy court. We do not expect any further significant impacts on our condensed consolidated financial statements as a result of the liquidation of this subsidiary.

Fair_Value_of_Financial_Instru

Fair Value of Financial Instruments	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Fair Value of Financial Instruments	'
	Note 13. Fair Value of Financial Instruments
	The fair values of our fixed rate long-term borrowings are calculated by using a discounted cash flow analysis factoring in current market borrowing rates for similar types of borrowing arrangements considering our credit profile. The carrying value of our variable rate long-term borrowings is a reasonable approximation of fair value due to the variable interest rates. The fair value of our fixed rate and variable rate borrowings is determined using Level 2 inputs under the U.S. GAAP fair value hierarchy. The carrying amounts and fair values of our long-term debt are in the table below:
		June 30, 2014				December 31, 2013
	(In Thousands of Dollars)	Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Variable rate long-term debt	$	37,500	$	37,500	$	10,763	$	10,763
	Fixed rate long-term debt	$	20,000	$	20,712	$	25,714	$	26,507

Subsequent_Events

Subsequent Events	6 Months Ended
	Jun. 30, 2014
Subsequent Events [Abstract]	'
Subsequent Events	'
	Note 14. Subsequent Events
	On July 21, 2014, we announced the signing of a definitive agreement to acquire Autocam Corporation (“Autocam”) for $244,500 in cash, $25,000 in stock and the assumption of $30,500 in debt. Autocam is a global leader in the engineering, manufacture and assembly of highly complex, system critical components for fuel systems, engines and transmission, power steering and electric motors. This transaction is expected to contribute over $250,000 to our revenues on a pro forma full year basis. Additionally, this acquisition will leverage NN’s and Autocam’s complementary core strengths and values and will position our Precision Metal Components business segment to outgrow its end markets by taking advantage of global market trends in fuel efficient technologies such as gasoline direct injection systems, high-pressure diesel injection systems and variable valve timing. We anticipate the transaction to close in the third quarter, subject to customary closing conditions and regulatory approval.
	We expect to finance the acquisition of Autocam by obtaining a term loan facility in the aggregate principal amount of $350,000, and an asset-based credit facility in the aggregate principal amount of $100,000, each of which will be guaranteed by our existing and future domestic subsidiaries. Additional details regarding the acquisition of Autocam or the financing for the transaction may be found in our Current Report on Form 8-K filed with the Securities and Exchange Commission on July 22, 2014.

Acquisitions_Tables

Acquisitions (Tables)	6 Months Ended
	Jun. 30, 2014
RFK [Member]	'
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table summarized the estimated fair values of assets acquired and liabilities assumed at the date of acquisition:
	Assets acquired and liabilities assumed on June 20, 2014
	Current assets	$	3,940
	Property, plant, and equipment		7,684
	Intangible assets subject to amortization		1,740
	Goodwill		732
	Total assets acquired	$	14,096
	Current liabilities	$	1,781
	Total liabilities assumed	$	1,781
	Net asset acquired	$	12,315
VS [Member]	'
Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed	'
	The following table summarized the fair values of assets acquired and liabilities assumed at the date of acquisition.
	Assets acquired and liabilities assumed on January 30, 2014	March 31,		2014			June 30,
		2014		adjustments			2014
				to fair value
	Current assets	$	1,263	$	144		$	1,407
	Property, plant, and equipment		6,902		164			7,066
	Intangible assets subject to amortization		75		—			75
	Goodwill		244		(244	)		—
	Total assets acquired	$	8,484	$	64		$	8,548
	Current liabilities	$	2,904	$	64		$	2,968
	Total liabilities assumed	$	2,904	$	64		$	2,968
	Net asset acquired	$	5,580	$	—		$	5,580

Inventories_Tables

Inventories (Tables)	6 Months Ended
	Jun. 30, 2014
Inventory Disclosure [Abstract]	'
Summary of Inventories	'
	Inventories are comprised of the following:
		June 30,		December 31,
		2014		2013
	Raw materials	$	19,380	$	15,448
	Work in process		11,491		9,672
	Finished goods		30,670		29,410
		$	61,541	$	54,530

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2014
Segment Reporting [Abstract]	'
Segment Information	'
	We did not have any significant inter-segment transactions during the three and six month periods ended June 30, 2014 and 2013.
	(In Thousands of Dollars)	Metal Bearing		Precision		Plastic and		Corporate			Total
		Components		Metal		Rubber		and
		Segment		Components		Components		Consolidations
				Segment		Segment
	Three Months ended June 30, 2014
	Revenues from external customers	$	73,038	$	25,267	$	8,375	$	—		$	106,680
	Net income (loss)	$	5,808	$	1,457	$	267	$	(2,332	)	$	5,200
	Six Months ended June 30, 2014
	Revenues from external customers	$	143,938	$	49,005	$	16,265	$	—		$	209,208
	Net income (loss)	$	11,764	$	3,098	$	418	$	(4,842	)	$	10,438
	Total assets	$	227,313	$	54,529	$	17,718	$	7,860		$	307,420
	(In Thousands of Dollars)	Metal Bearing		Precision		Plastic and		Corporate and			Total
		Components		Metal		Rubber		Consolidations
		Segment		Components		Components
				Segment		Segment
	Three Months ended June 30, 2013
	Revenues from external customers	$	65,869	$	21,543	$	8,893	$	—		$	96,305
	Net income (loss)	$	4,847	$	1,819	$	201	$	(2,097	)	$	4,770
	Six Months ended June 30, 2013
	Revenues from external customers	$	129,557	$	42,286	$	18,259	$	—		$	190,102
	Net income (loss)	$	8,871	$	2,868	$	460	$	(4,558	)	$	7,641
	Total assets	$	189,756	$	41,484	$	19,909	$	10,290		$	261,439

PostEmployment_Benefit_Liabili1

Post-Employment Benefit Liabilities (Tables)	6 Months Ended
	Jun. 30, 2014
Compensation And Retirement Disclosure [Abstract]	'
Schedule of Changes to Post-Employment Benefits	'
	The amounts shown in the table below represent the combined actual liabilities at June 30, 2014 and December 31, 2013, reported as a component of Other non-current liabilities in the Condensed Consolidated Balance Sheets.
		June 30,			December 31,
		2014			2013
	Beginning balance	$	6,920		$	6,930
	Amounts accrued		204			1,019
	Payments to employees/government managed plan		(148	)		(1,331	)
	Foreign currency impacts		(66	)		302
	Ending balance	$	6,910		$	6,920

LongTerm_Debt_and_ShortTerm_De1

Long-Term Debt and Short-Term Debt (Tables)	6 Months Ended
	Jun. 30, 2014
Debt Disclosure [Abstract]	'
Summary of Long-Term Debt and Short-Term Debt	'
	Long-term debt and short-term debt at June 30, 2014 and December 31, 2013 consisted of the following:
		June 30,		December 31,
		2014		2013
	Borrowings under our $100,000 revolving credit facility bearing interest at a floating rate equal to LIBOR (0.1875% at June 30, 2014) plus an applicable margin of 1.25% at June 30, 2014, expiring October 26, 2017.	$	37,500	$	10,763
	Borrowings under our $40,000 aggregate principal amount of fixed rate notes bore interest at a fixed rate of 4.89% and matured on April 26, 2014. Annual principal payments of $5,714 began on April 26, 2008 and extend through the date of maturity.		—		5,714
	Borrowings under our $20,000 aggregate principal amount of fixed rate notes bearing interest at a fixed rate of 4.64% maturing on December 20, 2018. Annual principal payments of $4,000 will begin on December 22, 2014 and extend through the date of maturity.		20,000		20,000
	Total debt		57,500		36,477
	Less current maturities of long-term debt		4,000		10,477
	Long-term debt, excluding current maturities of long-term debt	$	53,500	$	26,000

Goodwill_net_Tables

Goodwill, net (Tables)	6 Months Ended
	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Changes in Carrying Amount of Goodwill	'
	The changes in the carrying amount of goodwill, net for the six month period ended June 30, 2014 are as follows:
	(In Thousands of Dollars)	Metal Bearing
		Components
		Segment
	Balance as of January 1, 2014	$	8,624
	Currency translation impacts		28
	Goodwill acquired in acquisition		732
	Balance as of June 30, 2014	$	9,384

SharedBased_Compensation_Table

Shared-Based Compensation (Tables)	6 Months Ended
	Jun. 30, 2014
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'
Reconciliation of Option Activity	'
	The following table provides a reconciliation of option activity for the six month period ended June 30, 2014:
	Options		Shares (000)			Weighted-		Weighted-		Aggregate
						Average		Average		Intrinsic Value
						Exercise		Remaining		$0
						Price		Contractual
								Term
	Outstanding at January 1, 2014			1,233		$	10.65
	Granted			98		$	19.69
	Exercised			(65	)	$	11.84
	Forfeited or expired			(8	)	$	12.62
	Outstanding at June 30, 2014			1,258		$	11.24		6.5	$	17,995	(1)
	Exercisable at June 30, 2014			882		$	10.89		5.5	$	12,964	(1)
	(1)	The intrinsic value is the amount by which the market price of our stock was greater than the exercise price of any individual option grant at June 30, 2014.

Fair_Value_of_Financial_Instru1

Fair Value of Financial Instruments (Tables)	6 Months Ended
	Jun. 30, 2014
Fair Value Disclosures [Abstract]	'
Summary of Carrying Amounts and Fair Values of Long-term Debt	'
	The carrying amounts and fair values of our long-term debt are in the table below:
		June 30, 2014				December 31, 2013
	(In Thousands of Dollars)	Carrying		Fair		Carrying		Fair
		Amount		Value		Amount		Value
	Variable rate long-term debt	$	37,500	$	37,500	$	10,763	$	10,763
	Fixed rate long-term debt	$	20,000	$	20,712	$	25,714	$	26,507

Acquisitions_Additional_Inform

Acquisitions - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended			0 Months Ended	6 Months Ended		0 Months Ended	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 20, 2014	Jun. 30, 2014	Jun. 30, 2014	Jan. 30, 2014	Jun. 30, 2014	Mar. 31, 2014
						RFK [Member]	RFK [Member]	RFK [Member]	VS [Member]	VS [Member]	VS [Member]
								Customer Contracts and Trade Names [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'	'	'	'	'
Date of acquisition	'	'	'	'	'	'	20-Jun-14	'	'	30-Jan-14	'
Percentage of shares acquired	'	'	'	'	'	79.20%	'	'	'	'	'
Payments to acquire businesses	'	'	'	'	'	$9,756	'	'	'	'	'
Fees incurred from third parties as part of acquisition	'	'	'	'	'	102	'	'	716	'	'
Business combinations revenue during period from acquired business	'	'	'	'	'	'	210	'	'	5,919	'
Business combinations net income during period from acquired business	5,200	4,770	10,438	7,641	'	'	22	'	'	-950	'
Expected sales of acquired entity	'	'	'	'	'	'	12,000	'	'	'	'
Non-controlling interest	'	'	-2,559	'	'	'	2,559	'	'	'	'
Percentage of shares owned by non controlling owners	'	'	'	'	'	'	20.80%	'	'	'	'
Intangible assets subject to amortization	'	'	'	'	'	1,740	'	1,740	'	75	75
Weighted average life of intangible assets subject to amortization	'	'	'	'	'	'	'10 years	'	'	'	'
Goodwill arising from acquisition	9,384	'	9,384	'	8,624	732	732	'	'	'	244
Operating assets acquired in cash	'	'	16,217	'	'	'	'	'	5,580	'	'
Liabilities assumed	'	'	'	'	'	'	'	'	1,840	'	'
Integration costs incurred as part of acquisition	'	'	'	'	'	'	'	'	$341	'	'

Acquisitions_Summary_of_Estima

Acquisitions - Summary of Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 20, 2014
In Thousands, unless otherwise specified			VS [Member]	VS [Member]	VS [Member]	RFK [Member]	RFK [Member]
					Adjustments to Fair Value [Member]
Business Acquisition [Line Items]	'	'	'	'	'	'	'
Current assets	'	'	$1,407	$1,263	$144	'	$3,940
Property, plant, and equipment	'	'	7,066	6,902	164	'	7,684
Intangible assets subject to amortization	'	'	75	75	'	'	1,740
Goodwill	9,384	8,624	'	244	-244	732	732
Total assets acquired	'	'	8,548	8,484	64	'	14,096
Current liabilities	'	'	2,968	2,904	64	'	1,781
Total liabilities assumed	'	'	2,968	2,904	64	'	1,781
Net asset acquired	'	'	$5,580	$5,580	'	'	$12,315

Inventories_Summary_of_Invento

Inventories - Summary of Inventories (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Raw materials	$19,380	$15,448
Work in process	11,491	9,672
Finished goods	30,670	29,410
Inventories	$61,541	$54,530

Inventories_Additional_Informa

Inventories - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Inventory Disclosure [Abstract]	'	'
Inventory on consignment at customers' location	$5,733	$4,735

Net_Income_Per_Share_Additiona

Net Income Per Share - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]	'	'	'	'
Dilutive shares	393	36	354	33
Anti-dilutive options	0	1,027	0	1,027
Anti-dilutive securities excluded from computation of earnings per share minimum price range	'	$9.97	'	$9.97
Anti-dilutive securities excluded from computation of earnings per share maximum price range	'	$14.13	'	$14.13

Segment_Information_Segment_In

Segment Information - Segment Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues from external customers	$106,680	$96,305	$209,208	$190,102	'
Net income (loss)	5,200	4,770	10,438	7,641	'
Total assets	307,420	261,439	307,420	261,439	262,402
Metal Bearing Components Segment [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues from external customers	73,038	65,869	143,938	129,557	'
Net income (loss)	5,808	4,847	11,764	8,871	'
Total assets	227,313	189,756	227,313	189,756	'
Precision Metal Components Segment [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues from external customers	25,267	21,543	49,005	42,286	'
Net income (loss)	1,457	1,819	3,098	2,868	'
Total assets	54,529	41,484	54,529	41,484	'
Plastic and Rubber Components Segment [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues from external customers	8,375	8,893	16,265	18,259	'
Net income (loss)	267	201	418	460	'
Total assets	17,718	19,909	17,718	19,909	'
Corporate and Consolidations [Member]	'	'	'	'	'
Segment Reporting Information [Line Items]	'	'	'	'	'
Revenues from external customers	'	'	'	'	'
Net income (loss)	-2,332	-2,097	-4,842	-4,558	'
Total assets	$7,860	$10,290	$7,860	$10,290	'

PostEmployment_Benefit_Liabili2

Post-Employment Benefit Liabilities - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014
Minimum [Member]	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'
Awards for employees	'25 years
Maximum [Member]	'
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]	'
Awards for employees	'40 years

PostEmployment_Benefit_Liabili3

Post-Employment Benefit Liabilities - Schedule of Changes to Post-Employment Benefits (Detail) (USD $)	6 Months Ended	12 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Compensation And Retirement Disclosure [Abstract]	'	'
Beginning balance	$6,920	$6,930
Amounts accrued	204	1,019
Payments to employees/government managed plan	-148	-1,331
Foreign currency impacts	-66	302
Ending balance	$6,910	$6,920

LongTerm_Debt_and_ShortTerm_De2

Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Debt Instrument [Line Items]	'	'
Total debt	$57,500	$36,477
Less current maturities of long-term debt	4,000	10,477
Long-term debt, excluding current maturities of long-term debt	53,500	26,000
Total debt	57,500	36,477
October 26, 2017 [Member]	'	'
Debt Instrument [Line Items]	'	'
Borrowings under our $100,000 revolving credit facility bearing interest at a floating rate equal to LIBOR (0.1875% at June 30, 2014) plus an applicable margin of 1.25% at June 30, 2014, expiring October 26, 2017.	37,500	10,763
April 26, 2014 [Member]	'	'
Debt Instrument [Line Items]	'	'
Borrowings under our $40,000 aggregate principal amount of fixed rate notes bore interest at a fixed rate of 4.89% and matured on April 26, 2014. Annual principal payments of $5,714 began on April 26, 2008 and extend through the date of maturity.	'	5,714
December 20, 2018 [Member]	'	'
Debt Instrument [Line Items]	'	'
Borrowings under our $20,000 aggregate principal amount of fixed rate notes bearing interest at a fixed rate of 4.64% maturing on December 20, 2018. Annual principal payments of $4,000 will begin on December 22, 2014 and extend through the date of maturity.	$20,000	$20,000

LongTerm_Debt_and_ShortTerm_De3

Long-Term Debt and Short-Term Debt - Summary of Long-Term Debt and Short-Term Debt (Parenthetical) (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014
October 26, 2017 [Member]	'
Debt Instrument [Line Items]	'
Borrowings	$100,000
Line of credit LIBOR rate	0.19%
Applicable margin added to the interest rate post amendment	1.25%
April 26, 2014 [Member]	'
Debt Instrument [Line Items]	'
Percentage of fixed interest rate bearing	4.89%
April 26, 2014 [Member] | Fixed Rate Notes [Member]	'
Debt Instrument [Line Items]	'
Fixed rate notes payable	40,000
Annual principal payment of fixed rate notes	5,714
December 20, 2018 [Member]	'
Debt Instrument [Line Items]	'
Percentage of fixed interest rate bearing	4.64%
December 20, 2018 [Member] | Fixed Rate Notes [Member]	'
Debt Instrument [Line Items]	'
Fixed rate notes payable	20,000
Annual principal payment of fixed rate notes	$4,000

LongTerm_Debt_and_ShortTerm_De4

Long-Term Debt and Short-Term Debt - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Line of Credit Facility [Line Items]	'	'
Potential to expand credit facility under credit agreement	$35,000	'
Amount of credit facility to meet short term cash flow needs	10,000	'
December 20, 2018 [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Notes payable	20,000	'
Fixed Rate Notes [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Unamortized balance	30	34
Revolving Credit Facility [Member]	'	'
Line of Credit Facility [Line Items]	'	'
Borrowings	100,000	'
Unamortized balance	$1,404	$1,617

Goodwill_Net_Changes_in_Carryi

Goodwill, Net - Changes in Carrying Amount of Goodwill (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014
In Thousands, unless otherwise specified			Metal Bearing Components Segment [Member]
Goodwill [Line Items]	'	'	'
Beginning Balance	$9,384	$8,624	$8,624
Currency translation impacts	'	'	28
Goodwill acquired in acquisition	'	'	732
Ending Balance	$9,384	$8,624	$9,384

Goodwill_Net_Additional_Inform

Goodwill, Net - Additional Information (Detail) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014
Goodwill And Intangible Assets Disclosure [Abstract]	'
Impairment of goodwill	$0

Intangible_Assets_Net_Addition

Intangible Assets, Net - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014	Jun. 30, 2014
In Thousands, unless otherwise specified			Whirlaway [Member]	VS [Member]	VS [Member]	RFK [Member]
					Customer Contracts [Member]	Customer Contracts [Member]
Goodwill And Intangible Assets [Line Items]	'	'	'	'	'	'
Indefinite lived intangible asset not subject to amortization	$2,724	$900	$900	'	'	'
Finite-lived intangible assets, net	'	'	'	75	'	1,749
Finite-lived intangible asset, useful life	'	'	'	'	'10 years	'10 years
Amortization of intangible assets	'	'	'	'	$8	$175

SharedBased_Compensation_Addit

Shared-Based Compensation - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'	'	'
Share-based compensation expense	$714	$664	$1,286	$1,094
Number of options granted	'	'	98	354
Shares granted other than options	'	'	97	95
Expenses related to issuance of restricted stock	'	'	575	411
Vesting period of stock issue	'	'	'3 years	'3 years
Stock or unit option plan expense	'	'	$711	$683

SharedBased_Compensation_Recon

Shared-Based Compensation - Reconciliation of Option Activity (Detail) (USD $)	6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]	'	'
Number of options, Outstanding, Beginning Balance	1,233	'
Number of Options, Granted	98	354
Number of Options, Exercised	-65	'
Number of Options, Forfeited or expired	-8	'
Number of Options, Outstanding, Ending Balance	1,258	'
Number of Options, Options Exercisable	882	'
Weighted-Average Exercise Price, Outstanding, Beginning Balance	$10.65	'
Weighted-Average Exercise Price, Granted	$19.69	'
Weighted-Average Exercise Price, Exercised	$11.84	'
Weighted-Average Exercise Price, Forfeited or expired	$12.62	'
Weighted-Average Exercise Price, Outstanding, Ending Balance	$11.24	'
Weighted-Average Exercise Price, Options exercisable	$10.89	'
Weighted-Average Remaining Contractual Term, Outstanding, Ending Balance	'6 years 6 months	'
Weighted- Average Remaining Contractual Term, Options exercisable	'5 years 6 months	'
Aggregate Intrinsic Value, Outstanding, Ending Balance	$17,995	'
Aggregate Intrinsic Value, Options exercisable	$12,964	'

Provision_for_Income_Taxes_Add

Provision for Income Taxes - Additional Information (Detail)	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]	'	'
State and Local effective income tax rate	32.00%	35.00%
U.S. federal statutory rate	34.00%	'

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Commitments And Contingencies Disclosure [Abstract]	'	'
Recognized loss contingency	$0	$200

Fair_Value_of_Financial_Instru2

Fair Value of Financial Instruments - Summary of Carrying Amounts and Fair Values of Long-term Debt (Detail) (USD $)	Jun. 30, 2014	Dec. 31, 2013
In Thousands, unless otherwise specified
Variable Rate Long-Term Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt carrying amount	$37,500	$10,763
Long-term debt fair value	37,500	10,763
Fixed Rate Long-Term Debt [Member]	'	'
Debt Instrument [Line Items]	'	'
Long-term debt carrying value	20,000	25,714
Long-term debt fair value	$20,712	$26,507

Subsequent_Events_Additional_I

Subsequent Events - Additional Information (Detail) (Autocam Corporation [Member], USD $)	6 Months Ended	0 Months Ended
In Thousands, unless otherwise specified	Jun. 30, 2014	Jul. 21, 2014	Jun. 30, 2014
		Subsequent Event [Member]	Scenario, Forecast [Member]
Subsequent Event [Line Items]	'	'	'
Business acquisition, date of agreement	21-Jul-14	'	'
Business acquisition, consideration transferred in cash	'	$244,500	'
Business acquisition, consideration transferred in stock	'	25,000	'
Business acquisition, consideration in assumption of debt	'	30,500	'
Business acquisition, proforma revenue	'	250,000	'
Term loan facility	'	'	350,000
Asset based credit facility	'	'	$100,000