Debt (Additional Information) (Detail) (USD $)	1 Months Ended	3 Months Ended	12 Months Ended													0 Months Ended	1 Months Ended	12 Months Ended					1 Months Ended
	Nov. 30, 2010	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Jul. 13, 2011	Nov. 23, 2010	Jul. 13, 2011 Credit Agreement [Member]	Jul. 13, 2011 Maximum [Member] Credit Agreement [Member]	Dec. 31, 2013 Bank Term Loan [Member]	Dec. 31, 2013 Bank Term Loan [Member] Cash Flow Hedging [Member]	Jul. 31, 2013 Bank Term Loan [Member] Cash Flow Hedging [Member]	Jul. 13, 2011 Amended Credit Facility [Member]	Jul. 31, 2011 Amended Credit Facility [Member]	Dec. 31, 2013 Amended Credit Facility [Member]	Dec. 31, 2012 Amended Credit Facility [Member]	Dec. 31, 2013 Amended Credit Facility [Member] Credit Agreement [Member]	Jul. 13, 2011 Amended Credit Facility [Member] Federal Funds Rate [Member]	Jul. 13, 2011 Amended Credit Facility [Member] One Month LIBOR [Member]	Jul. 31, 2011 Amended Credit Facility [Member] Minimum [Member]	Jul. 31, 2011 Amended Credit Facility [Member] Maximum [Member]	Jul. 13, 2011 Amended Credit Facility [Member] Bank Term Loan [Member]	Jul. 13, 2011 Eurocurrency loans [Member] Credit Agreement [Member]
Debt Instrument [Line Items]
Credit agreement, maximum borrowing capacity			$ 165,000,000							$ 165,000,000								$ 265,000,000							$ 100,000,000
Credit agreement, agreement period																5 years
Credit agreement, maturity date	Nov. 23, 2014																Jul. 13, 2016
Reduction in interest costs																0.25%
Size of permitted acquisitions										25,000,000.0						100,000,000.0
Permitted additional indebtedness										20,000,000.0						120,000,000.0
Revolving credit outstanding borrowings									100,000,000
Debt Instrument Lower Range Basis Spread On Variable Rate											0.75%										0.50%
Debt Instrument Higher Range Basis Spread On Variable Rate											1.50%											1.00%
Line of credit, LIBOR rate, minimum spread																										1.75%
Line of credit, LIBOR rate, maximum spread																										2.50%
Unused commitment fee percentage																							0.20%	0.35%
Payments commencement date																	Sep. 30, 2011
Leverage ratio												3.0
Actual leverage ratio			1.00
Actual FCCR			2.39	2.18		2.23	2.06	2.27
Capitalized debt issuance costs				100,000	700,000					1,600,000
Amortization expense, debt issue costs			500,000	500,000	500,000
Capitalized debt issuance costs, net			1,300,000
Amount drawn on the line of credit to fund the acquisition of Curamik		145,000,000
Repayment of debt principal			21,206,000	25,519,000	22,500,000													20,500,000	24,500,000
Required payment on debt obligation within the next 12 months																		17,500,000
Repayments of Lines of Credit																				8,000,000
Term loan debt													77,500,000					77,500,000
Letter of credit remaining borrowing capacity			1,400,000
Letter of credit amount outstanding			0	0
Fair value of interest rate swap liability			700,000
Option to buy out capital lease, year			2013
Capital lease, expiration date			2021
Capital lease obligation			8,000,000	8,400,000	12,100,000
Amortization expense related to the capital lease			400,000	400,000	400,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation			1,200,000	800,000
Interest expense on outstanding debt			2,200,000	2,900,000	3,800,000
Unused commitment fee			500,000	400,000	200,000
Interest rate swap derivative, percentage of debt hedged														65.00%	65.00%
LIBOR in Effect at Period End			0.1875%
Interest rate spread over variable rate			2.00%										2.00%
Interest expense on capital lease			500,000	600,000	1,000,000
Interest Paid			$ 3,100,000	$ 4,000,000	$ 4,200,000