Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Restricted Stock [Member] Common Stock [Member]	Restricted Stock [Member] Additional Paid-in Capital [Member]	Restricted Stock [Member] Retained Earnings [Member]	Restricted Stock [Member] AOCI Attributable to Parent [Member]	Restricted Stock [Member]	Performance Shares [Member] Common Stock [Member]	Performance Shares [Member] Additional Paid-in Capital [Member]	Performance Shares [Member] AOCI Attributable to Parent [Member]	Performance Shares [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2022										16,376,683
Balance at Dec. 31, 2022										$ 16	$ 72,615	$ 122,979	$ (3,011)	$ 192,599
Common shares issued upon exercise of options and SARs, net (in shares)										4,604
Common shares issued upon exercise of options and SARs, net										$ 0	35	0	0	35
Restricted shares issued, net of forfeitures (in shares)	117,025
Restricted shares issued, net of forfeitures	$ 0	$ 0	$ 0	$ 0	$ 0
Share-based compensation expense										0	1,080	0	0	1,080
Cash dividends declared										0	0	(2,295)	0	(2,295)
Net income										0	0	888	0	888
Pensions, net of taxes										0	0	0	41	41
Change in currency translation adjustment, net of taxes										$ 0	0	0	307	307
Performance based shares issued (in shares)	117,025
Balance (in shares) at Mar. 31, 2023										16,498,312
Balance at Mar. 31, 2023										$ 16	73,730	121,572	(2,663)	$ 192,655
Balance (in shares) at Dec. 31, 2023										16,564,712				16,564,712
Balance at Dec. 31, 2023										$ 16	77,443	122,464	(2,285)	$ 197,638
Common shares issued upon exercise of options and SARs, net										0	549	(100)	0	449
Restricted shares issued, net of forfeitures (in shares)	115,804					9,896
Restricted shares issued, net of forfeitures	$ 0	$ 0	$ 0	$ 0	$ 0
Share-based compensation expense										0	1,015	0	0	1,015
Cash dividends declared										0	0	(2,330)	0	(2,330)
Net income										0	0	3,912	0	3,912
Pensions, net of taxes										0	0	0	23	23
Change in currency translation adjustment, net of taxes										$ 0	0	0	(481)	$ (481)
Common shares issued upon exercise of options and SARs, net (in shares)										53,311				53,042
Performance based shares issued (in shares)	115,804					9,896
Performance based shares issued						$ 0	$ 0	$ 0	$ 0
Written put options										$ 0	595	0	0	$ 595
Balance (in shares) at Mar. 31, 2024										16,743,723				16,743,723
Balance at Mar. 31, 2024										$ 16	$ 79,602	$ 123,946	$ (2,743)	$ 200,821