Goodwill and Intangible Assets, Net - Summary of Intangible Assets, Net (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Finite Lived Intangible Assets [Line Items]
Cost	$ 28,670	$ 15,380
Accumulated amortization	(4,914)	(2,269)
Carrying value	23,756	13,111
Backlog
Finite Lived Intangible Assets [Line Items]
Cost	200	200
Accumulated amortization	(200)	(183)
Carrying value		$ 17
Weighted average remaining life (in years)		1 month 6 days
Customer Relationships
Finite Lived Intangible Assets [Line Items]
Cost	14,660	$ 10,270
Accumulated amortization	(2,193)	(1,055)
Carrying value	$ 12,467	$ 9,215
Weighted average remaining life (in years)	7 years 7 months 6 days	8 years 4 months 24 days
Developed Technology Rights
Finite Lived Intangible Assets [Line Items]
Cost	$ 6,820	$ 910
Accumulated amortization	(894)	(167)
Carrying value	$ 5,926	$ 743
Weighted average remaining life (in years)	4 years 4 months 24 days	4 years 1 month 6 days
Trade Names
Finite Lived Intangible Assets [Line Items]
Cost	$ 6,990	$ 4,000
Accumulated amortization	(1,627)	(864)
Carrying value	$ 5,363	$ 3,136
Weighted average remaining life (in years)	5 years 6 months	4 years 1 month 6 days