Debt - Additional Information (Detail) (USD $)	1 Months Ended	3 Months Ended			6 Months Ended				1 Months Ended					1 Months Ended	6 Months Ended	12 Months Ended		1 Months Ended
	Nov. 30, 2010	Jun. 30, 2012	Jun. 30, 2011	Mar. 31, 2011	Jun. 30, 2012	Jun. 30, 2011	Jul. 13, 2011	Nov. 23, 2010	Jul. 31, 2011 Credit Agreement	Jun. 30, 2012 Credit Agreement	Jul. 13, 2011 Credit Agreement	Jun. 30, 2012 Bank Term Loan	Jul. 31, 2012 Bank Term Loan Cash Flow Hedging [Member] Subsequent Event	Jul. 31, 2011 Amended Credit Facility	Jun. 30, 2012 Amended Credit Facility	Dec. 31, 2011 Amended Credit Facility	Jul. 13, 2011 Amended Credit Facility	Jul. 31, 2011 Amended Credit Facility Minimum	Jul. 31, 2011 Amended Credit Facility Maximum	Jul. 13, 2011 Amended Credit Facility Federal Funds Rate	Jul. 13, 2011 Amended Credit Facility One Month LIBOR	Jul. 13, 2011 Amended Credit Facility Bank Term Loan	Jul. 13, 2011 Eurocurrency loans Credit Agreement
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								25,000,000
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 (1) prime rate; (2) federal funds effective rate plus 50 basis points; and (3) adjusted 1-month 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
Leverage ratio		1.6			1.6
Capitalized debt issuance costs		100,000			100,000			2,300,000
Amortization expense, debt issue costs		100,000	100,000		200,000	200,000
Capitalized debt issuance costs, net		2,000,000			2,000,000
Amount drawn on the line of credit to fund the acquisition of Curamik				145,000,000
Repayment of debt principal					2,992,000	10,000,000									2,500,000	22,500,000
Required payment on debt obligation within the next 12 months					10,000,000
Anticipate payment on debt obligation within the next 12 months					27,500,000
Term loan debt												95,000,000			95,000,000
Irrevocable standby letters of credit		1,100,000			1,100,000
Letter guarantee		600,000			600,000
Option to buy out capital lease, year					2013
Capital lease, expiration date					2021
Capital lease obligation		8,500,000			8,500,000
Amortization expense related to the capital lease		100,000	100,000		200,000	200,000
Interest expense on outstanding debt		700,000	1,000,000		1,500,000	2,100,000
Unused commitment fee		100,000	200,000		200,000	400,000
Interest rate swap derivative, percentage of debt hedged													65.00%
Interest rate swap, fixed interest rate for period from July 2013 to June 2016												0.75%
Interest expense on capital lease		$ 400,000	$ 300,000		$ 800,000	$ 700,000