Goodwill and Intangible Assets - Schedule of Amounts Related to Finite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Balance	$ 296,135	$ 288,904
Accumulated Amortization	136,710	127,907
Total Intangible Assets—Net	159,425	160,997
Customer Relationships
Finite-Lived Intangible Assets [Line Items]
Gross Balance	202,212	196,323
Accumulated Amortization	79,690	74,010
Total Intangible Assets—Net	$ 122,522	$ 122,313
Customer Relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	2 years	2 years
Customer Relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	15 years	15 years
Covenants Not to Compete
Finite-Lived Intangible Assets [Line Items]
Gross Balance	$ 32,941	$ 32,622
Accumulated Amortization	25,950	25,113
Total Intangible Assets—Net	$ 6,991	$ 7,509
Covenants Not to Compete | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	4 years	4 years
Covenants Not to Compete | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Trade Names
Finite-Lived Intangible Assets [Line Items]
Gross Balance	$ 21,422	$ 20,403
Accumulated Amortization	15,826	15,139
Total Intangible Assets—Net	$ 5,596	$ 5,264
Trade Names | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	1 year	1 year
Trade Names | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Proprietary Software
Finite-Lived Intangible Assets [Line Items]
Gross Balance	$ 22,081	$ 22,077
Accumulated Amortization	12,481	11,155
Total Intangible Assets—Net	$ 9,600	$ 10,922
Proprietary Software | Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	3 years	3 years
Proprietary Software | Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	5 years	5 years
Patent
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life	16 years	16 years
Gross Balance	$ 17,479	$ 17,479
Accumulated Amortization	2,763	2,490
Total Intangible Assets—Net	$ 14,716	$ 14,989