Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income	$ 149,093	$ 25,816
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	26,645	27,540
Equity-based compensation	7,494	6,579
Loss on lease termination	1,452
Long-lived asset impairment	6,569
Loss on disposal of assets	783	2,160
Provision for losses on accounts receivable	531	379
Non-cash lease expense	28,638	27,182
Accretion of original debt issuance discount	531	532
Non-cash interest	2,104	2,348
Deferred income taxes	4,068	16,615
Tax Receivable Agreement liability adjustment		(8,477)
Change in assets and liabilities, net of acquisitions:
Receivables and contracts in transit	(129,725)	(79,823)
Inventories	306,428	25,752
Prepaid expenses and other assets	1,214	7,082
Accounts payable and other accrued expenses	139,913	80,744
Payment pursuant to Tax Receivable Agreement	(6,563)	(9,425)
Accrued rent for cease-use locations		542
Deferred revenue	1,042	1,088
Operating lease liabilities	(34,379)	(27,174)
Other, net	10,075	719
Net cash provided by operating activities	515,913	100,179
Investing activities
Purchases of property and equipment	(13,660)	(27,848)
Purchase of real property		(25,093)
Proceeds from the sale of real property		10,117
Purchases of businesses, net of cash acquired		(38,608)
Proceeds from sale of property and equipment	491	910
Purchase of intangible assets	(150)
Net cash used in investing activities	(13,319)	(80,522)
Financing activities
Proceeds from long-term debt		11,662
Payments on long-term debt	(18,359)	(3,409)
Net payments on notes payable - floor plan, net	(316,492)	(29,426)
Borrowings on revolving line of credit		14,029
Payments on revolving line of credit	(20,000)
Payments of principal on finance lease obligations		(23)
Payment of debt issuance costs		(47)
Dividends on Class A common stock	(11,537)	(11,410)
Proceeds from exercise of stock options	159
RSU shares withheld for tax	(559)	(273)
Members' distributions	(55,425)	(38,057)
Net cash used in financing activities	(422,213)	(56,954)
Increase (decrease) in cash and cash equivalents	80,381	(37,297)
Cash and cash equivalents at beginning of the period	147,521	138,557
Cash and cash equivalents at end of the period	$ 227,902	$ 101,260