Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net income	$ 434,325	$ 523,229	$ 748,462
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	36,784	31,585	30,381
Amortization	8,697	8,555	8,644
Share-based compensation	19,248	19,582	14,879
Provisionfor doubtful accounts receivable, net of write-offs	(3,122)	2,197	3,580
Provision for inventory obsolescence, net of write-offs	3,048	1,930	5,869
Provision for deferred income taxes	15,739	10,359	15,169
Gains on sales of property and equipment	(1,645)	(317)	(527)
Equity in earnings of unconsolidated investments, net	(207)	(177)	(353)
Net gains (losses) on foreign currency transactions	218	(813)	48
Goodwill impairment	0	550	605
Other	(245)	200	472
Changes in operating assets and liabilities, net of effects of acquisitions:
Receivables	29,146	10,108	19,685
Product inventories	66,201	231,240	(263,567)
Prepaid expenses and other assets	75,122	57,840	(52,815)
Accounts payable	14,429	96,128	7,597
Accrued expenses and other current liabilities	(38,552)	(103,967)	(53,275)
Net cash provided by operating activities	659,186	888,229	484,854
Investing activities
Acquisition of businesses, net of cash acquired	(4,692)	(11,533)	(9,264)
Purchases of property and equipment, net of sale proceeds	(59,476)	(60,096)	(43,619)
Other investments, net	(2,001)	32	2,013
Net cash used in investing activities	(66,169)	(71,597)	(50,870)
Financing activities
Proceeds from revolving line of credit	1,517,800	1,548,618	1,917,173
Payments on revolving line of credit	(1,575,700)	(1,815,829)	(1,970,388)
Proceeds from term loan under credit facility	0	0	250,000
Payments on term loan under credit facility	(25,000)	(12,500)	0
Proceeds from asset-backed financing	727,000	552,500	220,000
Payments on asset-backed financing	(744,600)	(560,300)	(205,500)
Payments on Term Facility	0	(47,313)	(9,250)
Proceeds from Short-Term Debt	8,873	19,998	28,445
Repayments of Short-Term Debt	10,103	19,338	27,675
Payments of deferred financing costs	(2,077)	(52)	(170)
Payments of deferred and contingent acquisition consideration	0	(551)	(1,374)
Proceeds from stock issued under share-based compensation plans	13,190	10,455	8,934
Payments of cash dividends	(179,633)	(167,461)	(150,624)
Repurchase of common stock	(306,300)	(306,359)	(471,229)
Net cash provided by (used in) financing activities	(576,550)	(798,132)	(411,658)
Effect of exchange rate changes on cash and cash equivalents	(5,145)	2,449	(1,056)
Change in cash and cash equivalents	11,322	20,949	21,270
Cash and cash equivalents at beginning of year	66,540	45,591	24,321
Cash and cash equivalents at end of year	$ 77,862	$ 66,540	$ 45,591