Goodwill and Intangible Assets - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2010	Mar. 31, 2012 Curamik Electronics GmbH	Jan. 04, 2011 Curamik Electronics GmbH	Jan. 04, 2011 Curamik Electronics GmbH Unclassified Indefinite-lived Intangible Assets
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization expense	$ 1,200,000	$ 1,400,000
Anticipated future amortization expense for remainder of 2012	3,200,000
Anticipated future amortization expense for 2013	5,900,000
Anticipated future amortization expense for 2014	5,900,000
Anticipated future amortization expense for 2015	5,700,000
Anticipated future amortization expense for 2016	5,300,000
Intangible assets			52,354,000	52,400,000	5,300,000
Goodwill			$ 79,837,000	$ 79,800,000