Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	$ 94,478	$ 95,841
Accumulated Amortization	(44,812)	(57,888)
Net Carrying Amounts	49,666	37,953
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	79,702	82,431
Accumulated Amortization	(36,885)	(49,716)
Net Carrying Amounts	42,817	32,715
Non-compete agreements
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	1,357	1,264
Accumulated Amortization	(668)	(601)
Net Carrying Amounts	689	663
Customer backlog
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	1,105	1,102
Accumulated Amortization	(144)	(987)
Net Carrying Amounts	961	115
Trade name
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	170	60
Accumulated Amortization	(67)	(37)
Net Carrying Amounts	103	23
Developed software
Finite-Lived Intangible Assets, Net [Abstract]
Gross Carrying Amounts	12,144	10,984
Accumulated Amortization	(7,048)	(6,547)
Net Carrying Amounts	$ 5,096	$ 4,437