Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities:
Net earnings	$ 66,496	$ 60,884	$ 49,343
Adjustments to reconcile net earnings to net cash provided by operations:
Depreciation	11,090	11,291	12,253
Amortization	15,151	16,571	12,963
Deferred income taxes	(5,619)	(3,055)	(3,082)
Noncurrent employee benefits	(648)	(234)	206
Stock-based compensation expense	3,148	2,330	1,415
Changes in:
Receivables	(11,328)	(1,240)	3,036
Inventories	(21,021)	(13,633)	5,129
Payables	28,007	7,005	(391)
Prepaid expenses and other assets	(10,557)	(8,281)	(3,522)
Other liabilities	7,732	15,872	12,228
Total adjustments	15,955	26,626	40,235
Net cash provided by operations	82,451	87,510	89,578
Investing activities:
Property, plant and equipment expenditures	(5,891)	(6,746)	(9,059)
Proceeds from company owned life insurance plans		596
Acquisitions, net of cash acquired		(45,273)	(29,134)
Net cash used for investing activities	(5,891)	(51,423)	(38,193)
Financing activities:
Net decrease in short-term debt			(4,600)
Payment of contingent acquisition consideration			(1,001)
Dividends paid	(24,881)	(22,155)	(20,340)
Proceeds from exercise of stock options	703	2,036	1,058
Repurchase of common stock for treasury stock	(427)	(460)	(3,116)
Issuance of treasury stock		72	180
Net cash used for financing activities	(24,605)	(20,507)	(27,819)
Effect of foreign exchange rates on cash	(1,077)	(679)	(164)
Increase in cash and cash equivalents	50,878	14,901	23,402
Cash and cash equivalents - beginning of period	87,174	72,273	48,871
Cash and cash equivalents - end of period	138,052	87,174	72,273
Cash paid during the year for:
Income taxes	24,038	19,981	17,995
Interest		$ 118	$ 91
Property, plant and equipment acquired through operating lease	2,283
Property, plant and equipment accrued and unpaid	$ 1,517