Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Performance Shares [Member] Additional Paid-in Capital [Member]	Performance Shares [Member]	Restricted and Performance Shares [Member] Common Stock [Member]	Restricted and Performance Shares [Member] Additional Paid-in Capital [Member]	Restricted and Performance Shares [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Dec. 31, 2020								15,391,660
Balance at Dec. 31, 2020								$ 15	$ 61,844	$ 141,972	$ (12,201)	$ 191,630
Common shares issued upon exercise of options and SARs, net (in shares)								230,158
Common shares issued upon exercise of options and SARs, net								$ 1	2,299	(178)		2,122
Performance based shares issued (in shares)								42,823
Performance based shares issued												0
Restricted shares issued (in shares)								159,889
Restricted shares issued												0
Share-based compensation expense									1,669			1,669
Tax withheld on vesting of performance based shares	$ (405)	$ (405)
Cash dividends declared										(3,437)		(3,437)
Net income (loss)										16,855		16,855
Cash flow hedges, net of taxes											(11)	(11)
Pensions, net of taxes											6,335	6,335
Change in currency translation adjustment, net of taxes											386	386
Tax benefit from vesting of acquisition-related restricted stock									171			171
Balance (in shares) at Jun. 30, 2021								15,824,530
Balance at Jun. 30, 2021								$ 16	65,578	155,212	(5,491)	215,315
Balance (in shares) at Mar. 31, 2021								15,582,835
Balance at Mar. 31, 2021								$ 15	62,773	150,734	(12,139)	201,383
Common shares issued upon exercise of options and SARs, net (in shares)								219,412
Common shares issued upon exercise of options and SARs, net								$ 1	2,001	(10)		1,992
Performance based shares issued (in shares)								3,148
Performance based shares issued												0
Restricted shares issued (in shares)								19,135
Restricted shares issued												0
Share-based compensation expense									837			837
Tax withheld on vesting of performance based shares	$ (33)	$ (33)
Cash dividends declared										(1,889)		(1,889)
Net income (loss)										6,377		6,377
Cash flow hedges, net of taxes											(6)	(6)
Pensions, net of taxes											5,621	5,621
Change in currency translation adjustment, net of taxes											1,033	1,033
Balance (in shares) at Jun. 30, 2021								15,824,530
Balance at Jun. 30, 2021								$ 16	65,578	155,212	(5,491)	$ 215,315
Balance (in shares) at Dec. 31, 2021								16,127,505				16,127,505
Balance at Dec. 31, 2021						$ (76)	$ (76)	$ 16	69,351	163,836	(6,213)	$ 226,990
Common shares issued upon exercise of options and SARs, net									653	(158)		495
Performance based shares issued (in shares)								11,707
Performance based shares issued												0
Restricted shares issued (in shares)								21,843
Restricted shares issued												0
Share-based compensation expense									2,454			2,454
Tax withheld on vesting of performance based shares				$ (232)	$ (232)
Cash dividends declared										(4,171)		(4,171)
Net income (loss)										(21,445)		(21,445)
Cash flow hedges, net of taxes											(10)	(10)
Pensions, net of taxes											638	638
Change in currency translation adjustment, net of taxes											99	$ 99
Common shares issued upon exercise of options and SARs, net (in shares)								48,011				53,417
Restricted shares issued in conjunction with acquisition of business								$ 116,550
Restricted shares issued in conjunction with acquisition of business									2,000			$ 2,000
Written put option									(3,597)			$ (3,597)
Tax withheld on vesting of restricted shares and performance based shares (in shares)			(7,557)
Balance (in shares) at Jun. 30, 2022								16,318,059				16,318,059
Balance at Jun. 30, 2022								$ 16	70,629	137,986	(5,486)	$ 203,145
Balance (in shares) at Mar. 31, 2022								16,171,034
Balance at Mar. 31, 2022								$ 16	70,685	166,914	(5,037)	232,578
Common shares issued upon exercise of options and SARs, net									299			299
Performance based shares issued (in shares)								(1,834)
Restricted shares issued												0
Share-based compensation expense									1,242			1,242
Cash dividends declared										(2,253)		(2,253)
Net income (loss)										(26,675)		(26,675)
Cash flow hedges, net of taxes											(5)	(5)
Pensions, net of taxes											319	319
Change in currency translation adjustment, net of taxes											(763)	(763)
Common shares issued upon exercise of options and SARs, net (in shares)								32,309
Restricted shares issued in conjunction with acquisition of business								$ 116,550
Restricted shares issued in conjunction with acquisition of business									2,000			2,000
Written put option									(3,597)			$ (3,597)
Balance (in shares) at Jun. 30, 2022								16,318,059				16,318,059
Balance at Jun. 30, 2022								$ 16	$ 70,629	$ 137,986	$ (5,486)	$ 203,145