Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating activities
Net income (loss)	$ 642,075	$ 344,215	$ (120,301)
Adjustments to reconcile net income (loss) to net cash used in operating activities:
Depreciation and amortization	66,418	51,981	59,932
Equity-based compensation	47,936	20,661	13,145
Loss (gain) on lease termination	2,211	4,547	(686)
Loss on debt restructure	1,390	0	0
Long-lived asset impairment	3,044	12,353	66,270
(Gain) loss on sale or disposal of assets	(576)	1,332	11,492
Provision for losses on accounts receivable	1,610	1,068	(20)
Non-cash lease expense	60,519	57,536	54,921
Accretion of original debt issuance discount	1,330	1,079	1,038
Non-cash interest	2,513	4,306	4,585
Deferred income taxes	(5,890)	6,606	14,897
Tax Receivable Agreement liability adjustment	2,813	(141)	(10,005)
Change in assets and liabilities, net of acquisitions:
Receivables and contracts in transit	(28,797)	(2,777)	12,217
Inventories	(629,830)	239,334	216,111
Prepaid expenses and other assets	(4,676)	(3,016)	(7,951)
Accounts payable and other accrued expenses	52,694	39,846	(15,350)
Payment pursuant to Tax Receivable Agreement	(8,089)	(6,563)	(9,425)
Deferred revenue	14,761	4,560	708
Operating lease liabilities	(63,462)	(68,951)	(54,403)
CARES Act deferral of payroll taxes	(14,616)	29,231	0
Other, net	10,626	10,462	14,759
Net cash provided by operating activities	154,004	747,669	251,934
Investing activities
Purchases of property and equipment	(118,657)	(31,845)	(56,789)
Proceeds from sale of property and equipment	2,199	1,751	4,068
Purchase of real property	(129,154)	(53,078)	(31,567)
Proceeds from the sale of real property	3,635	7,484	28,169
Purchases of businesses, net of cash acquired	(100,117)	(47,571)	(48,418)
Purchase of other investments	(7,983)	0	0
Purchase of equity securities	0	(2,500)	0
Purchases of intangible assets	(5,695)	(176)	0
Net cash used in investing activities	(355,772)	(125,935)	(104,537)
Financing activities
Proceeds from long-term debt	430,698	0	11,663
Payments on long-term debt	(177,948)	(36,792)	(11,991)
Net proceeds (payments) on notes payable - floor plan, net	487,946	(324,485)	(43,989)
Additional borrowings	20,000	0	14,029
Payments on revolving line of credit	(20,000)	(20,000)	(11,883)
Payments on finance leases	(2,871)	(2,278)	(1,667)
Payment of debt issuance costs	(1,925)	0	(47)
Dividends on Class A common stock	(67,176)	(61,025)	(22,878)
Proceeds from exercise of stock options	4,111	4,635	0
RSU shares withheld for tax	(12,089)	(4,742)	(1,478)
Stock award shares withheld for tax	(7,727)	0	0
Repurchases of Class A common stock to treasury stock	(156,256)	(21,522)	0
Distributions to holders of LLC common units	(193,735)	(136,974)	(70,192)
Net cash provided by (used in) financing activities	303,028	(603,183)	(138,433)
Increase in cash and cash equivalents	101,260	18,551	8,964
Cash and cash equivalents at beginning of the period	166,072	147,521	138,557
Cash and cash equivalents at end of the period	$ 267,332	$ 166,072	$ 147,521