Goodwill and Intangible Assets - Summary of Company's Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	$ 99,936	$ 99,487
Accumulated Amortization	(57,268)	(46,617)
Total	42,668	52,870
Total intangible assets, gross carrying amount	100,836	100,387
Total intangible assets, net carrying amount	43,568	53,770
Trade names and trademarks
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets, trade names and trademarks	900	900
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	75,372	75,181
Accumulated Amortization	(40,975)	(32,968)
Total	34,397	42,213
Leasehold benefits
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	2,826	2,715
Accumulated Amortization	(2,490)	(2,247)
Total	336	468
Developed technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	14,314	14,186
Accumulated Amortization	(8,177)	(6,468)
Total	6,137	7,718
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	2,045	2,045
Accumulated Amortization	(1,739)	(1,612)
Total	306	433
Trade names and trademarks
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross carrying amount	5,379	5,360
Accumulated Amortization	(3,887)	(3,322)
Total	$ 1,492	$ 2,038