Condensed Consolidated Statements of Stockholders' Deficit (Unaudited) - USD ($) $ in Thousands	Common Stock	Preferred Stock Series A Preferred Stock	Preferred Stock Series B Preferred Stock	Treasury Stock	Additional Paid in Capital Series B Preferred Stock	Additional Paid in Capital	Equity-based compensation	Foreign currency translation adjustment	Unrealized Pension Actuarial Losses, net of tax	Accumulated Deficit	Series B Preferred Stock	Total
Beginning balance at Dec. 31, 2021	$ 37	$ 1		$ (10,949)		$ 838,853	$ 56,123	$ (7,463)	$ (10,946)	$ (1,532,428)		$ (666,772)
Beginning balance (in shares) at Dec. 31, 2021	66,300	2,778,111		612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(56,956)		(56,956)
Equity-based compensation							302					302
Foreign currency translation adjustment								1,477				1,477
Net realized pension actuarial gains (loss), net of tax									308			308
Common Stock exchanged for Series B Preferred Stock	$ (2)					2
Common Stock exchanged for Series B Preferred Stock (in shares)	(4,502)		900,328
Issuance of Common Stock from at the market offerings, net of offering costs	$ 24					114,509						114,533
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	59,070
Withholding of employee taxes on vested RSUs							(190)					(190)
Common Stock issued for vested RSUs (in shares)	272
Ending balance at Mar. 31, 2022	$ 59	$ 1		$ (10,949)		953,364	56,235	(5,986)	(10,638)	(1,589,384)		(607,298)
Ending balance (in shares) at Mar. 31, 2022	121,140	2,778,111	900,328	612
Beginning balance at Dec. 31, 2021	$ 37	$ 1		$ (10,949)		838,853	56,123	(7,463)	(10,946)	(1,532,428)		(666,772)
Beginning balance (in shares) at Dec. 31, 2021	66,300	2,778,111		612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss												(221,437)
Foreign currency translation adjustment												4,588
Net realized pension actuarial gains (loss), net of tax												1,934
Ending balance at Sep. 30, 2022	$ 142	$ 1		$ (10,949)		1,072,322	56,676	(2,875)	(9,012)	(1,753,865)		(647,560)
Ending balance (in shares) at Sep. 30, 2022	400,255	2,778,111	3,029,900	612
Beginning balance at Mar. 31, 2022	$ 59	$ 1		$ (10,949)		953,364	56,235	(5,986)	(10,638)	(1,589,384)		(607,298)
Beginning balance (in shares) at Mar. 31, 2022	121,140	2,778,111	900,328	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(79,199)		(79,199)
Equity-based compensation							528					528
Foreign currency translation adjustment								1,133				1,133
Net realized pension actuarial gains (loss), net of tax									802			802
Common Stock exchanged for Series B Preferred Stock	$ (4)					4
Common Stock exchanged for Series B Preferred Stock (in shares)	(10,648)		2,129,572
Issuance of Common Stock from at the market offerings, net of offering costs	$ 36					56,328						56,364
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	90,948
Withholding of employee taxes on vested RSUs							(2)					(2)
Common Stock issued for vested RSUs (in shares)	12
Agreed cancellation of Common Stock issued for Director's vested RSUs (in shares)	(155)
Dividend declared and paid on Preferred Stock					$ (1,396)						$ (1,396)
Ending balance at Jun. 30, 2022	$ 91	$ 1		$ (10,949)		1,008,300	56,761	(4,853)	(9,836)	(1,668,583)		(629,068)
Ending balance (in shares) at Jun. 30, 2022	201,297	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(85,282)		(85,282)
Equity-based compensation							(142)					(142)
Foreign currency translation adjustment								1,978				1,978
Net realized pension actuarial gains (loss), net of tax									824			824
Issuance of Common Stock from at the market offerings, net of offering costs	$ 51					65,590						65,641
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	200,468
Dividend declared and paid on Preferred Stock						(1,136)						(1,136)
Common Stock repurchased and retired						(487)						(487)
Common Stock repurchased and retired (in shares)	(1,787)
Reversal of excess withholding of employee taxes on vested RSUs							57					57
Issuance of Common Stock to Executive Chairman under certain subscription agreement						100						100
Issuance of Common Stock to Executive Chairman under certain subscription agreement, shares	355
Cancellation of fractional Common Stock on Reverse Stock Split						(45)						(45)
Ending balance at Sep. 30, 2022	$ 142	$ 1		$ (10,949)		1,072,322	56,676	(2,875)	(9,012)	(1,753,865)		(647,560)
Ending balance (in shares) at Sep. 30, 2022	400,255	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Cancellation of fractional Common Stock on Reverse Stock Split (shares)	(78)
Beginning balance at Dec. 31, 2022	$ 162	$ 1		$ (10,949)		1,102,619	56,958	(4,788)	(3,583)	(1,948,009)		(807,589)
Beginning balance (in shares) at Dec. 31, 2022	1,393,276	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(45,436)		(45,436)
Equity-based compensation							111					111
Foreign currency translation adjustment								(2,105)				(2,105)
Net realized pension actuarial gains (loss), net of tax									(89)			(89)
Issuance of Common Stock from at the market offerings, net of offering costs	$ 99					66,929						67,028
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	4,977,744
Ending balance at Mar. 31, 2023	$ 261	$ 1		$ (10,949)		1,169,548	57,069	(6,893)	(3,672)	(1,993,445)		(788,080)
Ending balance (in shares) at Mar. 31, 2023	6,371,020	2,778,111	3,029,900	612
Beginning balance at Dec. 31, 2022	$ 162	$ 1		$ (10,949)		1,102,619	56,958	(4,788)	(3,583)	(1,948,009)		(807,589)
Beginning balance (in shares) at Dec. 31, 2022	1,393,276	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss												(99,430)
Foreign currency translation adjustment												(3,369)
Net realized pension actuarial gains (loss), net of tax												(58)
Ending balance at Sep. 30, 2023	$ 261	$ 1				1,169,517	57,524	(8,157)	(3,641)	(2,058,388)		(842,883)
Ending balance (in shares) at Sep. 30, 2023	6,365,353	2,778,111	3,029,900
Beginning balance at Mar. 31, 2023	$ 261	$ 1		$ (10,949)		1,169,548	57,069	(6,893)	(3,672)	(1,993,445)		(788,080)
Beginning balance (in shares) at Mar. 31, 2023	6,371,020	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(30,886)		(30,886)
Equity-based compensation							203					203
Foreign currency translation adjustment								1,901				1,901
Net realized pension actuarial gains (loss), net of tax									(116)			(116)
Payment for fractional shares on reverse stock split in May 2023						(31)						(31)
Payment for fractional shares on reverse stock split in May 2023 (shares)	(5,667)
Ending balance at Jun. 30, 2023	$ 261	$ 1		$ (10,949)		1,169,517	57,272	(4,992)	(3,788)	(2,024,331)		(817,009)
Ending balance (in shares) at Jun. 30, 2023	6,365,353	2,778,111	3,029,900	612
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(23,108)		(23,108)
Equity-based compensation							252					252
Foreign currency translation adjustment								(3,165)				(3,165)
Net realized pension actuarial gains (loss), net of tax									147			147
Treasury stock retired				$ 10,949						(10,949)
Treasury stock retired (in shares)				(612)
Ending balance at Sep. 30, 2023	$ 261	$ 1				$ 1,169,517	$ 57,524	$ (8,157)	$ (3,641)	$ (2,058,388)		$ (842,883)
Ending balance (in shares) at Sep. 30, 2023	6,365,353	2,778,111	3,029,900