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 earnings	$ 108,543	$ 105,367	$ 96,104
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	54,935	51,848	48,879
Stock compensation expense	16,052	13,224	10,802
Deferred income taxes	(10,814)	(8,362)	(5,944)
Provision for doubtful accounts	37	401	180
Unrealized (gain) loss on foreign currency transactions and deferred compensation	(733)	914	(384)
Asset impairment charge and (gain) loss on disposal of assets	7,031	366	(53)
Change in fair value of contingent consideration liability	(11,300)	0	0
Changes in assets and liabilities, net of acquired balances
Accounts receivable	6,969	(3,618)	(20,700)
Inventories	10,530	(7,804)	(21,023)
Prepaid expenses and other current assets	(3,540)	1,870	(881)
Accounts payable and accrued expenses	3,552	(15,543)	47,067
Income taxes	2,194	296	4,787
Other	305	(423)	1,680
Net cash provided by operating activities	183,761	138,536	160,514
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(1,252)	(365,780)	0
Capital expenditures and intangible assets acquired	(37,892)	(49,945)	(37,363)
Proceeds from sale of assets	1,881	206	318
Proceeds from settlement of net investment hedge	2,740	0	0
Proceeds from insurance	0	0	1,831
Investment in affiliates	(290)	(495)	(86)
Net cash used in investing activities	(34,813)	(416,014)	(35,300)
Cash flows from financing activities:
Proceeds from revolving loan	18,000	435,000	5,000
Principal payments on revolving debt	(149,000)	(103,000)	(60,000)
Principal payment on acquired debt	0	(30,988)	0
Cash paid for financing costs	0	(1,232)	0
Principal payments on finance lease	(222)	(177)	(159)
Proceeds from stock options exercised	5,242	3,212	6,943
Dividends paid	(22,872)	(20,713)	(18,723)
Repurchases of common stock	(4,469)	(35,423)	(35,239)
Net cash (used in) provided by financing activities	(153,321)	246,679	(102,178)
Effect of exchange rate changes on cash	2,260	(5,880)	(4,368)
(Decrease) increase in cash and cash equivalents	(2,113)	(36,679)	18,668
Cash and cash equivalents beginning of period	66,560	103,239	84,571
Cash and cash equivalents end of period	$ 64,447	$ 66,560	$ 103,239