Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net earnings	$ 73,831	$ 52,689
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	13,312	14,863
Stock-based compensation	3,486	2,382
Amortization of deferred financing costs	33	34
Deferred income taxes	(3,872)	(4,594)
Unrealized losses (gains) on foreign currency revaluation	1,356	(278)
Gains on sale/disposal of property, plant and equipment	(2,117)	(1,596)
Gain on sale of Czech Republic business	(980)	0
Other, net	(1,037)	1,195
Changes in operating assets and liabilities:
Accounts receivable	22,500	(20,702)
Unbilled receivables	5,451	10,031
Inventories	33,613	(36,592)
Other current assets	(217)	(1,210)
Other assets	2,971	7,000
Accounts payable	(22,745)	1,522
Accrued expenses	5,356	10,933
Accrued restructuring costs	(1,228)	6,784
Other liabilities	(16,388)	(4,162)
Income taxes payable	(4,976)	1,958
Net cash provided by operating activities	108,349	40,257
Cash flows from investing activities:
Purchase of property, plant and equipment	(12,126)	(8,832)
Purchases of held to maturity and marketable securities	(59,992)	0
Proceeds from held to maturity securities	19,918	0
Payment for equity method investment	(10,282)	0
Investment in related party notes receivable	(2,152)	0
Proceeds from disposal/sale of property, plant and equipment	6,036	1,833
Proceeds from sale of business	5,063	0
Net cash used in investing activities	(53,535)	(6,999)
Cash flows from financing activities:
Dividends paid to common shareholders	(3,492)	(3,413)
Purchase of treasury stock	(105)	(349)
Borrowings under revolving credit line	5,000	0
Repayments under revolving credit line	(40,000)	(17,500)
Net cash used in financing activities	(38,597)	(21,262)
Effect of exchange rate changes on cash	2,888	(3,486)
Net increase in cash and cash equivalents	19,105	8,510
Cash and cash equivalents - beginning of year	70,266	61,756
Cash and cash equivalents - end of year	89,371	70,266
Supplemental cash flow information:
Income taxes, net of refunds received	25,056	14,618
Interest payments	4,729	3,371
ROU assets obtained in exchange for lease obligations	$ 5,999	$ 8,052