Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]
Cost	$ 12,218	$ 9,390
Accumulated Amortization	(3,234)	(8,040)
Net Carrying Amount	8,984	1,350
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	5,770	4,010
Accumulated Amortization	(2,159)	(3,892)
Net Carrying Amount	3,611	118
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	5,698	3,530
Accumulated Amortization	(816)	(2,364)
Net Carrying Amount	4,882	1,166
Non-Competition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	380	1,260
Accumulated Amortization	(106)	(1,214)
Net Carrying Amount	274	46
Tradenames - Finite Life [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	370	590
Accumulated Amortization	(153)	(570)
Net Carrying Amount	$ 217	$ 20