Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating activities
Net earnings	$ 36,553	$ 20,443	$ 10,800
Adjustments to reconcile net earnings to net cash provided by operating activities:
Impairment of goodwill and indefinite-lived intangibles	0	1,223	2,440
Depreciation and amortization	15,353	14,996	12,507
Loss from extinguishment of debt	0	0	30
Gain on disposal of property and equipment	(117)	(5)	(130)
Reclassification of foreign currency translation adjustment related to disposal of subsidiary	191	0	0
Share-based compensation expense	2,439	2,244	1,387
Inventory write-offs for obsolescence	1,650	2,288	2,525
Deferred income taxes	(2,040)	(3,256)	1,153
Foreign currency impacts and other items	(3,915)	(1,018)	591
Net changes in operating assets and liabilities, net of acquisition:
Accounts receivable	(4,777)	(8,038)	(753)
Inventories	(11,943)	(8,626)	2,986
Prepaid expenses and other current assets	(2,808)	(56)	67
Trade accounts payable	889	3,292	59
Other current liabilities	3,393	11,637	507
Other non current assets and liabilities, net	(1,413)	(624)	1,011
Accrued pension and other postretirement costs, net	(426)	(963)	133
Net cash provided by operating activities	33,029	33,537	35,313
Investing activities
Capital expenditures	(21,288)	(17,061)	(22,949)
Proceeds from sale of property and equipment	451	231	983
Purchase of business	0	(47,216)	156
Net cash used in investing activities	(20,837)	(64,046)	(21,810)
Financing activities
Principal payments on long-term debt	0	(18)	(3,493)
Debt issuance costs	0	0	(402)
Proceeds from revolving facility	0	20,000	0
Purchase of treasury stock	(2,739)	0	0
Purchase of non-controlling interest	0	0	(253)
Distributions to noncontrolling interests	(457)	(313)	(70)
Payments of employee taxes on certain share-based arrangements	(435)	(853)	(813)
Net cash (used in) provided by financing activities	(3,631)	18,816	(5,031)
Effect of exchange rate changes on cash and cash equivalents	(4,334)	(2,410)	3,056
Increase (decrease) in cash and cash equivalents	4,227	(14,103)	11,528
Cash and cash equivalents at beginning of year	84,335	98,438	86,910
Cash and cash equivalents at end of year	88,562	84,335	98,438
Supplemental disclosure of investing transactions:
Capital expenditures purchased	(19,951)	(17,567)	(24,327)
Capital expenditures accrued but not yet paid	$ 1,731	$ 3,068	$ 2,561