Goodwill and Intangible Assets (Additional Information) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014	Jan. 22, 2015
Goodwill and Intangible Assets Disclosure [Line Items]
Goodwill	$ 175,009,000		$ 98,227,000
Amortization expense	2,400,000	1,500,000
Annual Future Amortization Expense
Anticipated future amortization expense for remainder of 2015	8,000,000
Anticipated future amortization expense for 2016	10,200,000
Anticipated future amortization expense for 2017	9,900,000
Anticipated future amortization expense for 2018	9,400,000
Anticipated future amortization expense for 2019	8,900,000
Arlon [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Intangible assets				50,020,000
Goodwill				85,379,000
Annual Future Amortization Expense
Anticipated future amortization expense for remainder of 2015				4,400,000
Anticipated future amortization expense for 2016				5,800,000
Anticipated future amortization expense for 2017				5,800,000
Anticipated future amortization expense for 2018				5,800,000
Anticipated future amortization expense for 2019				5,800,000
Curamik [Member] | Unclassified Indefinite-lived Intangible Assets [Member]
Annual Future Amortization Expense
Intangible assets	$ 5,300,000