Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022		Dec. 31, 2021
Cash flows from operating activities:
Net income	$ 8,595	$ 104,778		$ 147,266
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	70,923	72,506		76,320
Non-cash lease expense	33,321	44,518		48,704
Stock-based compensation	15,646	12,367		23,194
Inventory write-down	88,108	43,286	[1]	31,300	[1]
Foreign currency (gains)/losses	1,039	8,245		7,056
Loss on disposal of assets	780	33		13,026
Impairment of fixed assets and other intangibles	0	9,916		31,892
Unrealized (gain)/losses on equity investments	0	0		(18,077)
Deferred taxes	(18,090)	(51,626)		5,821
Changes in operating assets and liabilities:
Accounts receivable, net	(22,679)	(11,449)		20,219
Inventories, net	(13,222)	(2,972)		(126,620)
Prepaid expenses and other	6,359	2,758		15,132
Other assets	45	3,099		(19,792)
Accounts payable	(10,083)	9,263		(13,279)
Accrued expenses	(37,701)	(120,833)		(104,992)
Other liabilities	(4,402)	(15,827)		4,412
Net cash provided by operating activities	118,639	108,062		141,582
Cash flows from investing activities:
Purchases of property and equipment	(58,490)	(59,056)		(68,615)
Proceeds on investment sales	18,147	5,932		15,094
Purchases of investments	(16,883)	(13,955)		(16,242)
Acquisitions (net of cash acquired)	(77,275)	0		(18,963)
Net cash used in investing activities	(134,501)	(67,079)		(88,726)
Cash flows from financing activities:
Exercise of employee stock options and taxes paid related to the net shares settlement of stock awards	4,561	27,052		13,861
Payment of cash dividends	(77,622)	(77,015)		(76,272)
Repurchase of shares of common stock	(13,011)	(70,045)		(80,420)
Finance lease principal payments	(3,198)	(1,919)		(1,871)
Payment of debt issuance cost	0	(5,077)		0
Payments on debt	(10,000)	(432,500)		(115,000)
Proceeds from debt	110,000	460,000		155,000
Net cash provided by (used in) financing activities	10,730	(99,504)		(104,702)
Effect of exchange rate changes on cash	(3,536)	(16,347)		(11,244)
Net increase (decrease) in cash and cash equivalents	(8,668)	(74,868)		(63,090)
Cash and cash equivalents, beginning of period	264,725	339,593		402,683
Cash and cash equivalents, end of period	$ 256,057	$ 264,725		$ 339,593

[1] Year ended December 31, 2022 and 2021 have been recast from Inventories, net to comply with current presentation