Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($)	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								$ 15,000	$ 61,844,000	$ 141,972,000	$ (12,201,000)	$ 191,630,000
Common shares issued upon exercise of options and SARs, net (in shares)								261,604
Common shares issued upon exercise of options and SARs, net								$ 1,000	2,629,000	(178,000)		2,452,000
Restricted shares issued (in shares)								264,166
Restricted shares issued												0
Share-based compensation expense									2,757,000			2,757,000
Cash dividends declared										(5,334,000)		(5,334,000)
Net income (loss)										25,051,000		25,051,000
Cash flow hedges, net of taxes											(16,000)	(16,000)
Pensions, net of taxes											6,613,000	6,613,000
Change in currency translation adjustment, net of taxes											(184,000)	(184,000)
Restricted shares issued, net of forfeitures (in shares)								42,823
Performance based shares issued												0
Tax withheld on vesting of performance based shares	$ (405,000)	$ (405,000)
Tax benefit from vesting of acquisition-related restricted stock									171,000			171,000
Balance (in shares) at Sep. 30, 2021								15,960,253
Balance at Sep. 30, 2021								$ 16,000	66,996,000	161,511,000	(5,788,000)	222,735,000
Balance (in shares) at Jun. 30, 2021								15,824,530
Balance at Jun. 30, 2021								$ 16,000	65,578,000	155,212,000	(5,491,000)	215,315,000
Common shares issued upon exercise of options and SARs, net (in shares)								31,446
Common shares issued upon exercise of options and SARs, net									330,000			330,000
Restricted shares issued (in shares)								104,277
Restricted shares issued												0
Share-based compensation expense									1,088,000			1,088,000
Cash dividends declared										(1,897,000)		(1,897,000)
Net income (loss)										8,196,000		8,196,000
Cash flow hedges, net of taxes											(5,000)	(5,000)
Pensions, net of taxes											278,000	278,000
Change in currency translation adjustment, net of taxes											(570,000)	(570,000)
Balance (in shares) at Sep. 30, 2021								15,960,253
Balance at Sep. 30, 2021								$ 16,000	66,996,000	161,511,000	(5,788,000)	222,735,000
Balance (in shares) at Dec. 31, 2021								16,127,505
Balance at Dec. 31, 2021						$ (76,000)	$ (76,000)	$ 16,000	69,351,000	163,836,000	(6,213,000)	226,990,000
Common shares issued upon exercise of options and SARs, net									842,000	(158,000)		684,000
Restricted shares issued (in shares)								11,843
Restricted shares issued												0
Share-based compensation expense									3,382,000			3,382,000
Cash dividends declared										(6,380,000)		(6,380,000)
Net income (loss)										(34,164,000)		(34,164,000)
Cash flow hedges, net of taxes											(47,000)	(47,000)
Pensions, net of taxes											957,000	957,000
Change in currency translation adjustment, net of taxes											(422,000)	$ (422,000)
Common shares issued upon exercise of options and SARs, net (in shares)								72,068				77,474
Restricted shares issued, net of forfeitures (in shares)								11,707
Performance based shares issued												$ 0
Tax withheld on vesting of performance based shares				$ (232,000)	$ (232,000)
Restricted shares issued in conjunction with acquisition of business								$ 116,550,000
Restricted shares issued in conjunction with acquisition of business									2,000,000			2,000,000
Tax withheld on vesting of restricted shares and performance based shares (in shares)			(7,557)
Written put options									(3,597)			(3,597)
Balance (in shares) at Sep. 30, 2022								16,332,116
Balance at Sep. 30, 2022								$ 16,000	71,746,000	123,058,000	(5,725,000)	189,095,000
Balance (in shares) at Jun. 30, 2022								16,318,059
Balance at Jun. 30, 2022								$ 16,000	70,629,000	137,986,000	(5,486,000)	203,145,000
Common shares issued upon exercise of options and SARs, net									189,000			189,000
Restricted shares issued												0
Share-based compensation expense									928,000			928,000
Cash dividends declared										(2,209,000)		(2,209,000)
Net income (loss)										(12,719,000)		(12,719,000)
Cash flow hedges, net of taxes											(37,000)	(37,000)
Pensions, net of taxes											319,000	319,000
Change in currency translation adjustment, net of taxes											(521,000)	(521,000)
Common shares issued upon exercise of options and SARs, net (in shares)								24,057
Restricted shares issued, net of forfeitures (in shares)								(10,000)
Balance (in shares) at Sep. 30, 2022								16,332,116
Balance at Sep. 30, 2022								$ 16,000	$ 71,746,000	$ 123,058,000	$ (5,725,000)	$ 189,095,000