Intangible Assets - Schedule of Goodwill, Customer Relationships and Trademarks (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Goodwill	$ 120,343	$ 120,343
Total	29,041
Customer relationships—Acquired
Finite-Lived Intangible Assets [Line Items]
Cost	64,083	64,083
Accumulated amortization	(45,030)	(40,231)
Total	19,053	23,852
Customer relationships—Other
Finite-Lived Intangible Assets [Line Items]
Cost	17,056	17,056
Accumulated amortization	(12,221)	(9,534)
Total	4,835	7,522
Trademarks
Finite-Lived Intangible Assets [Line Items]
Cost	7,570	8,502
Accumulated amortization	(2,417)	(2,794)
Total	$ 5,153	$ 5,708