Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating activities:
Net earnings	$ 92,598	$ 66,496	$ 60,884
Adjustments to reconcile net earnings to net cash provided by operations:
Depreciation	10,937	11,090	11,291
Amortization	17,173	15,151	16,571
Deferred income taxes	(9,650)	(5,619)	(3,055)
Noncurrent employee benefits	(338)	(648)	(234)
Stock-based compensation expense	5,188	3,148	2,330
Changes in:
Receivables	(6,351)	(11,328)	(1,240)
Inventories	(32,467)	(21,021)	(13,633)
Payables	8,506	28,007	7,005
Prepaid expenses and other assets	(7,012)	(10,557)	(8,281)
Other liabilities	31,533	7,732	15,872
Total adjustments	17,519	15,955	26,626
Net cash provided by operations	110,117	82,451	87,510
Investing activities:
Property, plant and equipment expenditures	(12,003)	(5,891)	(6,746)
Acquisitions, net of cash acquired	(17,127)		(45,273)
Proceeds from company owned life insurance plans			596
Net cash used for investing activities	(29,130)	(5,891)	(51,423)
Financing activities:
Dividends paid	(29,052)	(24,881)	(22,155)
Proceeds from exercise of stock options	967	703	2,036
Repurchase of common stock for treasury stock		(427)	(460)
Issuance of treasury stock			72
Net cash used for financing activities	(28,085)	(24,605)	(20,507)
Effect of foreign exchange rates on cash	828	(1,077)	(679)
Increase in cash and cash equivalents	53,730	50,878	14,901
Cash and cash equivalents - beginning of period	138,052	87,174	72,273
Cash and cash equivalents - end of period	191,782	138,052	87,174
Cash paid during the year for:
Income taxes	38,934	24,038	19,981
Interest			$ 118
Property, plant and equipment acquired through operating lease	830	2,283
Property, plant and equipment accrued and unpaid	$ 450	$ 1,517