Intangible Assets - Changes in Goodwill, Customer Relationships and Trademarks (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Goodwill [Roll Forward]
Balance at beginning of period	$ 120,343	$ 120,343	$ 120,343
Additions	0		0
Adjustments	0
Amortization	0	0	0
Balance at end of period	120,343	120,343	120,343
Finite-lived Intangible Assets [Roll Forward]
Balance at end of period	17,715
Goodwill	120,343	120,343	120,343
Additions	0		0
Adjustments	0
Amortization	0	0	0
Customer Relationships— Acquired & Non-Compete Agreements
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	14,513	23,852	36,194
Additions	0		0
Adjustments	0
Amortization expense	(9,081)	(9,339)	(12,342)
Balance at end of period	5,432	14,513	23,852
Customer Relationships— Other
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	3,255	7,522	6,865
Additions	9,100		6,913
Adjustments	(27)
Amortization expense	(3,577)	(4,267)	(6,256)
Balance at end of period	8,751	3,255	7,522
Trademarks
Finite-lived Intangible Assets [Roll Forward]
Balance at beginning of period	4,598	5,708	7,287
Additions	0		0
Adjustments	0
Amortization expense	(1,066)	(1,110)	(1,579)
Balance at end of period	$ 3,532	$ 4,598	$ 5,708