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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income	$ 155,899	$ 90,398	$ 32,291
Adjustments to reconcile net income to cash provided by operating activities, net of effects of acquisition:
Depreciation and amortization	26,152	27,576	29,331
Stock-based compensation	8,280	6,128	6,330
Excess and obsolescence inventory reserve	953		1,046
(Gain) loss on sale of assets	(127)	(52)	54
Deferred income taxes	994	3,863	(2,424)
Changes in operating assets and liabilities:
Trade receivables	840	(5,236)	(7,609)
Inventories	(15,726)	10,624	2,073
Trade accounts payable and accrued expenses	(392)	7,954	(3,646)
Contract liability with customers	(84)	(9,539)	2,146
Employee compensation and benefits	(5,433)	20,910	(6,646)
Product liability	(234)	308	(354)
Prepaid expenses, other assets and other liabilities	1,217	(7,905)	(888)
Income taxes receivable/payable		(1,223)	(2,117)
Cash provided by operating activities	172,339	143,806	49,587
Investing Activities
Property, plant, and equipment additions	(28,776)	(24,229)	(20,296)
Purchase of Marlin assets		(28,316)
Purchases of short-term investments	(681,940)	(369,439)	(282,738)
Proceeds from maturity of short-term investments	602,976	377,920	267,576
Net proceeds from sale of assets	203	178	14
Cash used for investing activities	(107,537)	(43,886)	(35,444)
Financing Activities
Dividends paid	(59,104)	(113,896)	(14,319)
Repurchase of common stock			(1,995)
Payment of employee withholding tax related to share-based compensation	(4,801)	(1,297)	(901)
Cash used for financing activities	(63,905)	(115,193)	(17,215)
Increase (decrease) in cash and cash equivalents	897	(15,273)	(3,072)
Cash and cash equivalents at beginning of year	20,147	35,420	38,492
Cash and cash equivalents at end of year	$ 21,044	$ 20,147	$ 35,420

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