Goodwill and Intangible Assets - Intangible Assets by Major Asset Class (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Intangible Assets by Major Class [Line Items]
Gross	$ 128,152	$ 128,132
Accumulated amortization	39,421	39,350
Net book value	88,731	88,782
Trade name, trademark and trade dress and other
Intangible Assets by Major Class [Line Items]
Gross	88,590	88,590
Net book value	88,590	88,590
Patents
Intangible Assets by Major Class [Line Items]
Gross	31,581	31,581
Accumulated amortization	31,440	31,389
Net book value	$ 141	192
Patents | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	2 years
Patents | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	16 years
Developed technology and other
Intangible Assets by Major Class [Line Items]
Gross	$ 7,981	7,961
Accumulated amortization	7,981	7,961
Net book value	$ 0	$ 0
Developed technology and other | Minimum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	1 year
Developed technology and other | Maximum
Intangible Assets by Major Class [Line Items]
Useful Life (years)	9 years