Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income	$ 202,680	$ 103,377
Adjustments to reconcile net income to net cash provided by operating activities-
Depreciation and amortization	95,122	84,891
Gain on sale of property and equipment, net	(224)	(256)
Gain on joint venture transaction	(12,500)	0
Gain on business acquisition	(6,958)	0
Stock-based compensation expense related to employee equity awards and employee stock purchases	17,996	15,203
Deferred income tax expense	4,116	(14,602)
Change in accounts and notes receivable, net	(85,110)	12,046
Change in inventories, net	(193,046)	76,772
Change in prepaid expenses and other, net	(1,922)	(1,255)
Change in trade accounts payable	33,307	12,376
Change in customer deposits	(8,773)	(23,725)
Change in accrued expenses	18,572	(26,243)
Other, net	(5,081)	(881)
Net cash provided by operating activities	58,179	237,703
Cash flows from investing activities:
Acquisition of property and equipment	(107,226)	(84,352)
Proceeds from the sale of property and equipment	2,772	327
Business disposition	27,500	0
Business acquisition, net of cash acquired	(15,051)	0
Other	(2,189)	1,146
Net cash used in investing activities	(94,194)	(82,879)
Cash flows from financing activities:
Draws (payments) on floor plan notes payable – non-trade, net	190,483	(40,909)
Proceeds from long-term debt	571,302	52,325
Principal payments on long-term debt	(574,165)	(129,221)
Principal payments on finance lease obligations	(8,110)	(6,361)
Proceeds from issuance of shares relating to equity awards and employee stock purchases	8,068	11,339
Taxes paid related to net share settlement of equity awards	(8,637)	(7,394)
Payments of cash dividends	(21,589)	(19,922)
Common stock repurchased	(52,789)	(10,818)
Net cash provided by (used in) financing activities	104,563	(150,961)
Net increase in cash and cash equivalents	68,548	3,863
Cash and cash equivalents, beginning of period	148,146	312,048
Cash and cash equivalents, end of period	216,694	315,911
Supplemental disclosure of cash flow information:
Interest	5,964	13,213
Income taxes, net of refunds	38,354	67,766
Assets acquired under finance leases	$ 5,749	$ 15,019