Intangibles, Net - Schedule of Intangibles, Net (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 157,057	$ 161,693	$ 162,618
Accumulated amortization	136,561	134,502
Net	20,496	27,191
Trademarks [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	13,540	13,540
Accumulated amortization	6,934	5,116
Net	$ 6,606	8,424
Amortization Method	Straight-line
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 100,737	105,373
Accumulated amortization	88,564	88,931
Net	$ 12,173	16,442
Amortization Method	Accelerated
Other Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 42,780	42,780
Accumulated amortization	41,063	40,455
Net	$ 1,717	$ 2,325
Amortization Method	Straight-line