Consolidated Statement of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Treasury Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Noncontrolling Interest [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Foreign Currency Adjustment Attributable to Parent [Member]	Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]	Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]	Parent [Member]	Noncontrolling Interest [Member]	Total
Balance (in shares) at Dec. 31, 2019											38,525,636	0
Balance at Dec. 31, 2019	$ 0	$ 0	$ 413	$ (413)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 385	$ 0	$ 276,827	$ (46,145)	$ (4,568)	$ 475	$ (1,929)	$ 225,045	$ 46,739	$ 271,784
Issuance of common stock (in shares)											1,762,817	0
Issuance of common stock											$ 18	$ 0	8,361	0	0	0	0	8,379	0	8,379
Warrant expenses											0	0	1,173	0	0	0	0	1,173	0	1,173
Net income (loss)											0	0	0	(31,407)	0	0	0	(31,407)	1,990	(29,417)
Other comprehensive loss for the period											0	0	0	0	(2,729)	(577)	(645)	(3,951)	(1,211)	(5,162)
Share-based compensation expenses											$ 0	$ 0	447	0	0	0	0	447	0	447
Balance (in shares) at Sep. 30, 2020											40,288,453	0
Balance at Sep. 30, 2020											$ 403	$ 0	287,221	(77,965)	(7,297)	(102)	(2,574)	199,686	47,518	247,204
Balance (in shares) at Dec. 31, 2019											38,525,636	0
Balance at Dec. 31, 2019	$ 0	$ 0	$ 413	$ (413)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 385	$ 0	276,827	(46,145)	(4,568)	475	(1,929)	225,045	46,739	$ 271,784
Balance (in shares) at Dec. 31, 2020											40,453,462	0								40,453,462
Balance at Dec. 31, 2020											$ 405	$ 0	288,700	(85,543)	(4,529)	(8)	(2,749)	196,276	50,606	$ 246,882
Balance (in shares) at Jun. 30, 2020											40,210,299	0
Balance at Jun. 30, 2020											$ 401	$ 0	286,205	(78,332)	(8,233)	(205)	(2,935)	196,901	45,720	242,621
Issuance of common stock (in shares)											78,154	0
Issuance of common stock											$ 2	$ 0	368	0	0	0	0	370	0	370
Share-based compensation expenses											0	0	238	0	0	0	0	238	0	238
Warrant expenses											0	0	410	0	0	0	0	410	0	410
Net income (loss)											0	0	0	367	0	0	0	367	1,385	1,752
Other comprehensive loss for the period											$ 0	$ 0	0	0	936	103	361	1,400	413	1,813
Balance (in shares) at Sep. 30, 2020											40,288,453	0
Balance at Sep. 30, 2020											$ 403	$ 0	287,221	(77,965)	(7,297)	(102)	(2,574)	199,686	47,518	$ 247,204
Balance (in shares) at Dec. 31, 2020											40,453,462	0								40,453,462
Balance at Dec. 31, 2020											$ 405	$ 0	288,700	(85,543)	(4,529)	(8)	(2,749)	196,276	50,606	$ 246,882
Issuance of common stock (in shares)											406,276	0
Issuance of common stock											$ 4	$ 0	1,430	0	0	0	0	1,434	0	1,434
Warrant expenses											0	0	991	0	0	0	0	991	0	991
Net income (loss)											0	0	0	(5,194)	0	0	0	(5,194)	6,581	1,387
Other comprehensive loss for the period											$ 0	$ 0	0	0	(2,147)	8	(647)	(2,786)	(443)	(3,229)
Total Number of Shares Purchased (in shares)												57,759
Repurchase of common stock											$ 0	$ (329)	0	0	0	0	0	(329)	0	(329)
Share-based compensation expenses											$ 0	$ 0	932	0	0	0	0	932	0	$ 932
Balance (in shares) at Sep. 30, 2021											40,859,738	57,759								40,859,738
Balance at Sep. 30, 2021											$ 409	$ (329)	292,053	(90,737)	(6,676)	0	(3,396)	191,324	56,744	$ 248,068
Balance (in shares) at Jun. 30, 2021											40,796,179	0
Balance at Jun. 30, 2021											$ 408	$ 0	291,401	(90,813)	(6,497)	0	(3,101)	191,398	54,072	245,470
Issuance of common stock (in shares)											63,559	0
Issuance of common stock											$ 1	$ 0	150	0	0	0	0	151	0	151
Share-based compensation expenses											0	0	341	0	0	0	0	341	0	341
Warrant expenses											0	0	161	0	0	0	0	161	0	161
Net income (loss)											0	0	0	76	0	0	0	76	3,046	3,122
Other comprehensive loss for the period											$ 0	$ 0	0	0	(179)	0	(295)	(474)	(374)	$ (848)
Total Number of Shares Purchased (in shares)												57,759								57,759
Repurchase of common stock											$ 0	$ (329)	0	0	0	0	0	(329)	0	$ (329)
Balance (in shares) at Sep. 30, 2021											40,859,738	57,759								40,859,738
Balance at Sep. 30, 2021											$ 409	$ (329)	$ 292,053	$ (90,737)	$ (6,676)	$ 0	$ (3,396)	$ 191,324	$ 56,744	$ 248,068