Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 147,266	$ 191,355	$ 173,553
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	76,320	73,991	76,650
Non-cash lease expense	48,704	46,163	44,460
Stock-based compensation	23,194	24,060	9,909
Foreign currency (gains)/losses	7,056	(287)	3,829
Loss on disposal of assets	13,026	3,209	0
Impairment of fixed assets	31,892	0	0
Unrealized (gain)/losses on equity investments	(18,077)	0	0
Deferred taxes	5,821	(11,914)	1,965
Changes in operating assets and liabilities:
Accounts receivable, net	20,219	(11,207)	2,746
Inventories, net	(95,320)	(31,137)	18,446
Prepaid expenses and other	15,132	(153)	(17,435)
Other assets	(19,792)	(31,616)	(67,109)
Accounts payable	(13,279)	24,836	(7,184)
Accrued expenses	(104,992)	87,452	(86,997)
Other liabilities	4,412	14,389	25,098
Net cash provided by operating activities	141,582	379,141	177,931
Cash flows from investing activities:
Purchases of property and equipment	(68,615)	(63,823)	(66,067)
Proceeds on investment sales	15,094	14,037	11,160
Purchases of investments	(16,242)	(14,693)	(8,432)
Acquisitions (net of cash acquired)	(18,963)	(14,949)	(8,073)
Net cash used in investing activities	(88,726)	(79,428)	(71,412)
Cash flows from financing activities:
Exercise of employee stock options and taxes paid related to the net shares settlement of stock awards	13,861	5,764	(2,325)
Payment of cash dividends	(76,272)	(78,387)	(82,189)
Repurchase of shares of common stock	(80,420)	(144,334)	(825)
Finance lease principal payments	(1,871)	(709)	0
Payments on debt	(115,000)	(142,500)	(214,455)
Proceeds from debt	155,000	115,000	145,000
Net cash used in financing activities	(104,702)	(245,166)	(154,794)
Effect of exchange rate changes on cash	(11,244)	12,506	(3,006)
Net increase (decrease) in cash and cash equivalents	(63,090)	67,053	(51,281)
Cash and cash equivalents, beginning of period	402,683	335,630	386,911
Cash and cash equivalents, end of period	$ 339,593	$ 402,683	$ 335,630