Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items]
Cost	$ 12,220	$ 12,218
Accumulated Amortization	(3,805)	(3,234)
Net Carrying Amount	8,415	8,984
Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	5,770	5,770
Accumulated Amortization	(2,576)	(2,159)
Net Carrying Amount	3,194	3,611
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	5,700	5,698
Accumulated Amortization	(914)	(816)
Net Carrying Amount	4,786	4,882
Non-Competition Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	380	380
Accumulated Amortization	(137)	(106)
Net Carrying Amount	243	274
Tradenames - Finite Life [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	370	370
Accumulated Amortization	(178)	(153)
Net Carrying Amount	$ 192	$ 217