Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 100,225	$ 70,266
Accounts receivable, net of allowance of $1,233 and $1,552, respectively	94,265	107,274
Inventories	139,997	172,465
Unbilled receivables	16,654	18,244
Assets held for sale	0	1,466
Other current assets	11,875	11,693
Total current assets	363,016	381,408
Property, plant and equipment, net	38,193	36,833
Right-of-use assets	21,660	21,551
Equity method investment	9,978	0
Intangible assets, net	50,662	54,111
Goodwill	25,463	25,099
Deferred income taxes	11,936	7,281
Other assets	36,255	34,183
Total assets	559,068	560,466
Current Liabilities:
Accounts payable	43,984	64,589
Accrued expenses	55,256	50,873
Operating lease liabilities, current	6,190	5,870
Other current liabilities	12,252	14,972
Total current liabilities	117,682	136,304
Long-term Liabilities:
Long-term debt	60,000	95,000
Operating lease liabilities, long-term	15,551	15,742
Liability for uncertain tax positions	19,608	24,798
Minimum pension obligation and unfunded pension liability	18,903	18,522
Deferred income taxes	973	1,257
Other liabilities	4,940	6,497
Total liabilities	237,657	298,120
Commitments and contingencies (see Note 15)
Stockholders' Equity:
Preferred stock, no par value, 1,000,000 shares authorized; none issued	0	0
Treasury stock (unrestricted, consisting of 3,323 Class A shares and 17,342 Class B shares)	(349)	(349)
Additional paid-in capital	43,488	40,772
Retained earnings	296,365	237,188
Accumulated other comprehensive loss	(19,370)	(16,546)
Total stockholders' equity	321,411	262,346
Total liabilities and stockholders' equity	559,068	560,466
Common Class A [Member]
Stockholders' Equity:
Common stock	214	214
Common Class B [Member]
Stockholders' Equity:
Common stock	1,063	1,067
Related Party [Member]
Current Assets:
Related party note receivable	$ 1,905	$ 0