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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	$ 110,027	$ 49,968	$ 76,070
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization including impairment loss	12,698	9,067	8,729
Provision for doubtful accounts	853	4,824	1,380
Noncash stock compensation	2,853	3,029	3,394
Share of income of equity investment	(53)	(549)
Lease expense	7,302	5,483	6,021
Deferred tax expense (benefit)	(465)	581	(2,330)
Change in fair value of derivatives	65	(137)	(169)
Changes in:
Accounts receivable	(45,395)	13,157	1,124
Inventories	(49,815)	19,333	(5,925)
Other assets	(16,725)	1,176	(4,945)
Operating lease liabilities	(7,503)	(5,421)	(4,953)
Accounts payable and accrued expenses	103,046	(32,239)	(4,960)
Income taxes, net	2,698	(3,279)	3,016
Net cash provided by operating activities	119,586	64,993	76,452
Cash flows from investing activities:
Purchases of short-term investments	(55,691)	(7,582)	(97,958)
Proceeds from sale of short-term investments	10,644	11,513	44,814
Purchase of property, equipment and leasehold improvements	(141,274)	(11,011)	(5,427)
Payment for intangible assets acquired	(1,545)	(1,251)	(6,067)
Purchase of equity investment		(13,998)
Net cash used in investing activities	(187,866)	(22,329)	(64,638)
Cash flows from financing activities:
Repayment of long-term debt	(43,056)	(13,725)	(22,321)
Proceeds from issuance of long-term debt	157,382	13,438
Proceeds from exercise of options	5,393	2,771	4,458
Dividends paid	(31,690)	(20,805)	(34,579)
Dividends paid to noncontrolling interests	(9,836)	(324)	(9,654)
Purchase of subsidiary shares from noncontrolling interests			(6,087)
Net cash provided by (used in) financing activities	78,193	(18,645)	(68,183)
Effect of exchange rate changes on cash	(11,207)	12,245	(3,350)
Net increase (decrease) in cash and cash equivalents	(1,294)	36,264	(59,719)
Cash and cash equivalents – beginning of year	169,681	133,417	193,136
Cash and cash equivalents – end of year	168,387	169,681	133,417
Cash paid for:
Interest	2,468	1,105	1,764
Income taxes	$ 40,497	$ 21,772	$ 26,332

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