Intangible Assets, Goodwill and Other Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 154,523	$ 164,526
Accumulated Amortization	(33,768)	(32,677)
Net Carrying Amount	120,755	131,849
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	125,423	135,290
Accumulated Amortization	(18,968)	(21,637)
Net Carrying Amount	$ 106,455	$ 113,653
Weighted Average Amortization Period in Years	11 years 3 months 18 days	12 years 1 month 6 days
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 1,400	$ 1,536
Accumulated Amortization	(361)	(147)
Net Carrying Amount	$ 1,039	$ 1,389
Weighted Average Amortization Period in Years	2 years 2 months 12 days	3 years
Intellectual property
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 27,700	$ 27,700
Accumulated Amortization	(14,439)	(10,893)
Net Carrying Amount	$ 13,261	$ 16,807
Weighted Average Amortization Period in Years	3 years 6 months	3 years 8 months 12 days