Inventories and Floor Plan Payables - Floor Plan Outstanding (Details) - USD ($) $ in Thousands	12 Months Ended		24 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022
Floor Plan Payable
Less: outstanding letters of credit	$ (16,300)	$ (16,400)	$ (16,300)
Minimum
Floor Plan Payable
Floor plan payment due period	3 days	3 days
Maximum
Floor Plan Payable
Floor plan payment due period			10 days
Floor Plan Facility
Floor Plan Payable
Total commitment	$ 1,700,000	$ 1,700,000	$ 1,700,000
Less: borrowings, net	(1,319,941)	(1,011,345)	(1,319,941)
Less: flooring line aggregate interest reduction account	(217,669)	(92,108)	(217,669)
Additional borrowing capacity	162,390	596,547	162,390
Less: short-term payable for sold inventory	(33,501)	(28,036)	(33,501)
Less: purchase commitments	(43,807)	(34,612)	(43,807)
Unencumbered borrowing capacity	85,082	533,899	85,082
Line of Credit | Floor Plan Facility
Floor Plan Payable
Total commitment	70,000	70,000	70,000
Less: borrowings, net	(20,885)	(20,885)	(20,885)
Additional borrowing capacity	49,115	49,115	49,115
Letters of credit | Floor Plan Facility
Floor Plan Payable
Total commitment	30,000	30,000	30,000
Less: outstanding letters of credit	(11,371)	(11,500)	(11,371)
Additional letters of credit capacity	$ 18,629	$ 18,500	$ 18,629