Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net earnings	$ 22,710	$ 28,930
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	13,646	11,928
Stock compensation expense	4,770	3,077
Deferred income taxes	(203)	0
Provision for doubtful accounts	31	328
Unrealized (gains) loss on foreign currency transactions and deferred compensation	(349)	37
Gain on disposal of assets	(968)	(29)
Change in fair value of contingent consideration liability	1,600	0
Changes in assets and liabilities
Accounts receivable	403	(20,405)
Inventories	(5,145)	(17,598)
Prepaid expenses and other current assets	(2,747)	487
Accounts payable and accrued expenses	(5,112)	(7,708)
Income taxes	5,540	8,522
Other	662	(548)
Net cash provided by operating activities	34,838	7,021
Cash flows from investing activities:
Cash paid for acquisitions, net of cash acquired	(341)	0
Capital expenditures and intangible assets acquired	(9,720)	(10,256)
Proceeds from sale of assets	0	184
Net cash used in investing activities	(10,061)	(10,072)
Cash flows from financing activities:
Proceeds from revolving loan	13,000	20,000
Principal payments on revolving loan	(22,000)	0
Principal payments on finance lease	(55)	(41)
Proceeds from stock options exercised	2,453	498
Dividends paid	(22,867)	(20,703)
Purchase of common stock	(3,849)	(34,599)
Net cash used in financing activities	(33,318)	(34,845)
Effect of exchange rate changes on cash	2,180	(877)
Decrease in cash and cash equivalents	(6,361)	(38,773)
Cash and cash equivalents beginning of period	66,560	103,239
Cash and cash equivalents end of period	$ 60,199	$ 64,466