Goodwill and Intangible Assets (Additional Information) (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 High Performance Foams [Member]	Dec. 31, 2012 High Performance Foams [Member]	Dec. 31, 2013 Curamik Electronics Solutions [Member]	Dec. 31, 2013 Elastomer Component Division [Member]	Jan. 04, 2011 Curamik Electronics GmbH [Member]	Jan. 04, 2011 Curamik Electronics GmbH [Member] Unclassified Indefinite-lived Intangible Assets [Member]
Goodwill and Intangible Assets Disclosure [Line Items]
Amortization expense	$ 6,000,000	$ 4,400,000	$ 5,400,000
Estimated future amortization expense for 2014	5,900,000
Estimated future amortization expense for 2015	5,500,000
Estimated future amortization expense for 2016	5,000,000
Estimated future amortization expense for 2017	4,400,000
Intangible assets								52,354,000	5,300,000
Goodwill acquired								79,837,000
Annual Impairment Testing
Goodwill	$ 108,671,000	$ 105,041,000		$ 24,205,000	$ 23,973,000	$ 82,200,000	$ 2,200,000
Annual Impairment Testing, Percent Decline in Operating Segment	10.00%
Annual Impairment Testing, with Decline, Fair Value				355.00%		17.00%	170.00%
Annual Impairment Discounted Cash Flow, Discount Rate				13.00%		14.50%	3.00%
Goodwill, Excess of Fair Value Over Carrying Value, Percent				405.00%		30.00%	200.00%