Goodwill and Intangible Assets - Components of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	$ 105,212	$ 32,013
Finite lived intangible assets, Accumulated amortization	(13,552)	(5,679)
Finite lived intangible assets, Net	91,660	26,334
Customer Lists [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	86,277	21,850
Finite lived intangible assets, Accumulated amortization	(9,141)	(2,939)
Finite lived intangible assets, Net	$ 77,136	18,911
Customer Lists [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Customer Lists [Member] | Range One [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	7 years
Customer Lists [Member] | Range Two [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years
Customer Lists [Member] | Range Three [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	12 years
Customer Lists [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	14 years
Patents and Technology [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Finite lived intangible assets, Cost	$ 16,082	8,473
Finite lived intangible assets, Accumulated amortization	(3,621)	(2,259)
Finite lived intangible assets, Net	$ 12,461	6,214
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]
Finite lived intangible assets, Cost	$ 2,853	1,690
Finite lived intangible assets, Accumulated amortization	(790)	(481)
Finite lived intangible assets, Net	$ 2,063	$ 1,209
Trade Names and Trademarks [Member] | Minimum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	3 years
Trade Names and Trademarks [Member] | Range One [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	5 years
Trade Names and Trademarks [Member] | Maximum [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Useful life (years)	10 years