Debt (Additional Information) (Detail) (USD $)	1 Months Ended	3 Months Ended			9 Months Ended	12 Months Ended									1 Months Ended						1 Months Ended	12 Months Ended			1 Months Ended
	Nov. 30, 2010	Dec. 31, 2012	Sep. 30, 2011	Mar. 31, 2011	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Jul. 13, 2011	Nov. 23, 2010	Dec. 31, 2012 Minimum [Member]	Jul. 31, 2011 Credit Agreement [Member]	Dec. 31, 2012 Credit Agreement [Member]	Jul. 13, 2011 Credit Agreement [Member]	Dec. 31, 2012 Bank Term Loan [Member]	Dec. 31, 2012 Bank Term Loan [Member] Cash Flow Hedging [Member] Subsequent Event [Member]	Jul. 31, 2012 Bank Term Loan [Member] Cash Flow Hedging [Member] Subsequent Event [Member]	Jul. 31, 2011 Amended Credit Facility [Member]	Dec. 31, 2012 Amended Credit Facility [Member]	Dec. 31, 2011 Amended Credit Facility [Member]	Jul. 13, 2011 Amended Credit Facility [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] Federal Funds Rate [Member]	Jul. 13, 2011 Amended Credit Facility [Member] One Month LIBOR [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											$ 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											100,000,000
Permitted additional indebtedness													20,000,000											120,000,000
Revolving credit outstanding borrowings												100,000,000										8,000,000
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, interest rate description															The base reference rate is the greater of the prime rate; federal funds effective rate plus 50 basis points; and adjusted London interbank offered (“LIBO”) rate plus 100 basis points.
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
Covenants, leverage ratio																3.0
Covenant Requirements Fixed Charge Coverage Ratio		1.25				1.25	2.50		1.25	1.25	1.25
Leverage ratio		1.35				1.35
Fixed Charge Coverage Ratio Minimum		2.18				2.18	2.60		1.93	2.09	2.27			1.00
Capitalized debt issuance costs		100,000				100,000							2,300,000
Amortization expense, debt issue costs			100,000		400,000	500,000
Capitalized debt issuance costs, net		1,800,000				1,800,000
Amount drawn on the line of credit to fund the acquisition of Curamik				145,000,000
Repayment of debt principal						25,519,000	22,500,000	0														24,500,000	22,500,000
Required payment on debt obligation within the next 12 months																						12,500,000
Repayments of Lines of Credit						8,000,000
Term loan debt																		90,000,000				90,000,000
Irrevocable standby letters of credit		1,400,000				1,400,000
Letter guarantee		100,000				100,000
Option to buy out capital lease, year						2013
Capital lease, expiration date						2021
Capital lease obligation		8,400,000				8,400,000	9,200,000
Amortization expense related to the capital lease		400,000	100,000		300,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation		800,000				800,000	400,000
Interest expense on outstanding debt						2,900,000	3,800,000
Unused commitment fee						400,000	200,000
Interest rate swap derivative, percentage of debt hedged																			65.00%	65.00%
Total outstanding debt		98,000,000				98,000,000
LIBOR in Effect at Period End		0.25%				0.25%
Interest rate spread over variable rate		2.25%				2.25%												2.25%
Interest expense on capital lease						600,000	1,000,000
Interest Paid						$ 4,000,000