Goodwill and Intangible Assets - Components of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	$ 14,520	$ 9,290
Finite lived intangible assets, Accumulated amortization	(2,884)	(1,499)
Finite lived intangible assets, Net	11,636	7,791
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	7 years
Finite lived intangible assets, Cost	7,450	3,820
Finite lived intangible assets, Accumulated amortization	(1,183)	(776)
Finite lived intangible assets, Net	6,267	3,044
Customer Lists [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Customer Lists [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Patents and Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Finite lived intangible assets, Cost	5,980	4,610
Finite lived intangible assets, Accumulated amortization	(1,398)	(563)
Finite lived intangible assets, Net	4,582	4,047
Patents and Technology [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Patents and Technology [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Finite lived intangible assets, Cost	1,090	860
Finite lived intangible assets, Accumulated amortization	(303)	(160)
Finite lived intangible assets, Net	$ 787	$ 700
Trademarks [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	3 years
Trademarks [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years