Goodwill and Intangible Assets - Components of Intangible Assets (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	$ 31,920	$ 14,520
Finite lived intangible assets, Accumulated amortization	(3,346)	(2,884)
Finite lived intangible assets, Net	28,574	11,636
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Finite lived intangible assets, Cost	21,850	7,450
Finite lived intangible assets, Accumulated amortization	(1,434)	(1,183)
Finite lived intangible assets, Net	20,416	6,267
Customer Lists [Member] | Customer List One [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	7 years
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)	12 years
Patents and Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	8,380	5,980
Finite lived intangible assets, Accumulated amortization	(1,575)	(1,398)
Finite lived intangible assets, Net	6,805	4,582
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
Trade Names and Trademarks [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Finite lived intangible assets, Cost	1,690	1,090
Finite lived intangible assets, Accumulated amortization	(337)	(303)
Finite lived intangible assets, Net	$ 1,353	$ 787
Trade Names and Trademarks [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	3 years
Trade Names and Trademarks [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years