Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Finite Lived Intangible Assets [Line Items]
Cost	$ 12,164	$ 12,188
Accumulated Amortization	(8,242)	(7,757)
Net Carrying Amount	3,922	4,431
Technology [Member]
Finite Lived Intangible Assets [Line Items]
Cost	5,770	5,770
Accumulated Amortization	(5,770)	(5,492)
Net Carrying Amount		278
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Cost	5,644	5,668
Accumulated Amortization	(1,722)	(1,553)
Net Carrying Amount	3,922	4,115
Non-Competition Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Cost	380	380
Accumulated Amortization	(380)	(359)
Net Carrying Amount		21
Tradenames - Finite Life [Member]
Finite Lived Intangible Assets [Line Items]
Cost	370	370
Accumulated Amortization	$ (370)	(353)
Net Carrying Amount		$ 17