Goodwill and Intangible Assets - Schedule of Long-lived Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 108,660	$ 64,848
Impairments	(2,777)
Acquisitions		43,812
Accumulated Amortization	(66,639)	(55,298)
Net Carrying Amount	$ 39,244	$ 53,362
Weighted Average Amortization Period	8 years 2 months 12 days	8 years 2 months 12 days
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 49,700	$ 41,500
Impairments	0
Acquisitions		8,200
Accumulated Amortization	(40,441)	(35,088)
Net Carrying Amount	$ 9,259	$ 14,612
Weighted Average Amortization Period	7 years 6 months	7 years 6 months
Tradenames
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 31,269	$ 12,921
Impairments	0
Acquisitions		18,348
Accumulated Amortization	(13,415)	(9,763)
Net Carrying Amount	$ 17,854	$ 21,506
Weighted Average Amortization Period	9 years 9 months 18 days	9 years 9 months 18 days
Patents and technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 21,228	$ 6,003
Impairments	(2,777)
Acquisitions		15,225
Accumulated Amortization	(7,470)	(5,501)
Net Carrying Amount	$ 10,981	$ 15,727
Weighted Average Amortization Period	8 years 9 months 18 days	8 years 9 months 18 days
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 5,896	$ 4,100
Impairments	0
Acquisitions		1,796
Accumulated Amortization	(4,759)	(4,399)
Net Carrying Amount	$ 1,137	$ 1,497
Weighted Average Amortization Period	4 years 10 months 24 days	4 years 10 months 24 days
Other
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 567	$ 324
Impairments	0
Acquisitions		243
Accumulated Amortization	(554)	(547)
Net Carrying Amount	$ 13	$ 20
Weighted Average Amortization Period	2 years 4 months 24 days	2 years 4 months 24 days