Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 92,453	$ 45,333
Adjustments to reconcile net income to net cash provided by operating activities-
Depreciation and amortization	45,809	42,601
Gain on sale of property and equipment, net	(179)	(92)
Gain on joint venture transaction	(12,500)	0
Stock-based compensation expense related to employee stock options and employee stock purchases	13,793	11,520
Provision for deferred income tax expense	1,019	(8,375)
Change in accounts receivable, net	(58,810)	(14,690)
Change in inventories	(98,292)	(1,797)
Change in prepaid expenses and other, net	(578)	(729)
Change in trade accounts payable	49,656	23,903
Change in customer deposits	(8,715)	(31,243)
Change in accrued expenses	14,574	(25,495)
Other, net	(3,645)	(795)
Net cash provided by operating activities	34,585	40,141
Cash flows from investing activities:
Acquisition of property and equipment	(45,689)	(32,933)
Proceeds from the sale of property and equipment	2,635	136
Business disposition	27,500	0
Other	(736)	638
Net cash used in investing activities	(16,290)	(32,159)
Cash flows from financing activities:
Draws (payments) on floor plan notes payable – non-trade, net	71,478	38,518
Proceeds from long-term debt	207,500	20,125
Principal payments on long-term debt	(204,000)	(44,669)
Principal payments on finance lease obligations	(3,997)	(2,090)
Proceeds from issuance of shares relating to equity awards	4,823	7,410
Taxes paid related to net share settlement of equity awards	(7,215)	(6,779)
Payments of cash dividends	(11,083)	(9,914)
Common stock repurchased	(14,421)	(6,561)
Net cash provided by (used) in financing activities	43,085	(3,960)
Net increase in cash and cash equivalents	61,380	4,022
Cash and cash equivalents, beginning of period	148,146	312,048
Cash and cash equivalents, end of period	209,526	316,070
Supplemental disclosure of cash flow information:
Interest	2,244	7,262
Income taxes (refund) paid, net	(14)	27,552
Assets acquired under finance leases	$ 2,672	$ 10,368