Condensed Consolidated Statements of Stockholders' Deficit - USD ($) $ in Thousands	Common Stock	Preferred Stock Series A Preferred Stock	Preferred Stock Series B Preferred Stock	Treasury Stock	Additional Paid in Capital	Equity-Based Compensation	Foreign Currency Translation Adjustment	Unrealized Pension Actuarial Losses, net of tax	Accumulated Deficit	Total
Beginning balance at Dec. 31, 2020	$ 15	$ 1		$ (10,949)	$ 446,739	$ 52,183	$ (7,419)	$ (17,064)	$ (1,390,038)	$ (926,532)
Beginning balance (in shares) at Dec. 31, 2020	2,462,111	3,290,050		122,585
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss									(39,200)	(39,200)
Equity-based compensation						387				387
Foreign currency translation adjustment							100			100
Net realized pension actuarial gains, net of tax								(157)		(157)
Preferred shares converted to Common Stock (in shares)	11,171	(510,681)
Payment for fractional shares on Reverse Stock Split					(14)					(14)
Payment for fractional shares on Reverse Stock Split (in shares)	(272)
Issuance of Common Stock from at the market offerings, net of offering costs	$ 1				25,079					25,080
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	486,591
Ending balance at Mar. 31, 2021	$ 16	$ 1		$ (10,949)	471,804	52,570	(7,319)	(17,221)	(1,429,238)	(940,336)
Ending balance (in shares) at Mar. 31, 2021	2,959,601	2,779,369		122,585
Beginning balance at Dec. 31, 2020	$ 15	$ 1		$ (10,949)	446,739	52,183	(7,419)	(17,064)	(1,390,038)	(926,532)
Beginning balance (in shares) at Dec. 31, 2020	2,462,111	3,290,050		122,585
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(58,567)
Foreign currency translation adjustment										(1,344)
Net realized pension actuarial gains, net of tax										(242)
Ending balance at Jun. 30, 2021	$ 17	$ 1		$ (10,949)	489,176	53,163	(8,763)	(17,306)	(1,448,605)	(943,266)
Ending balance (in shares) at Jun. 30, 2021	3,520,464	2,778,111		122,585
Beginning balance at Dec. 31, 2020	$ 15	$ 1		$ (10,949)	446,739	52,183	(7,419)	(17,064)	(1,390,038)	(926,532)
Beginning balance (in shares) at Dec. 31, 2020	2,462,111	3,290,050		122,585
Ending balance at Dec. 31, 2021	$ 37	$ 1		$ (10,949)	838,853	56,123	(7,463)	(10,946)	(1,532,428)	(666,772)
Ending balance (in shares) at Dec. 31, 2021	13,259,748	2,778,111		122,585
Beginning balance at Mar. 31, 2021	$ 16	$ 1		$ (10,949)	471,804	52,570	(7,319)	(17,221)	(1,429,238)	(940,336)
Beginning balance (in shares) at Mar. 31, 2021	2,959,601	2,779,369		122,585
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss									(19,367)	(19,367)
Equity-based compensation						593				593
Foreign currency translation adjustment							(1,444)			(1,444)
Net realized pension actuarial gains, net of tax								(85)		(85)
Common Stock exchanged for Series B Preferred Stock (in shares)	28	(1,258)
Issuance of Common Stock from at the market offerings, net of offering costs	$ 1				17,372					17,373
Issuance of Common Stock from at the market offerings, net of offering costs (in shares)	560,835
Ending balance at Jun. 30, 2021	$ 17	$ 1		$ (10,949)	489,176	53,163	(8,763)	(17,306)	(1,448,605)	(943,266)
Ending balance (in shares) at Jun. 30, 2021	3,520,464	2,778,111		122,585
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	13,259,748	2,778,111		122,585
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, 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)	(900,328)		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)	11,814,075
Withholding of employee taxes on vested RSUs						(190)				(190)
Common Stock issued for vested RSUs (in shares)	54,360
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	24,227,855	2,778,111	900,328	122,585
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	13,259,748	2,778,111		122,585
Increase (Decrease) in Stockholders' Equity (Deficit)
Net loss										(136,155)
Foreign currency translation adjustment										2,610
Net realized pension actuarial gains, net of tax										1,110
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	40,259,275	2,778,111	3,029,900	122,585
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	24,227,855	2,778,111	900,328	122,585
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, net of tax								802		802
Dividend declared and paid on Preferred Stock					(1,396)					(1,396)
Common Stock exchanged for Series B Preferred Stock	$ (4)				4
Common Stock exchanged for Series B Preferred Stock (in shares)	(2,129,572)		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)	18,189,580
Withholding of employee taxes on vested RSUs						(2)				(2)
Common Stock issued for vested RSUs (in shares)	2,494
Agreed cancellation of Common Stock issued for Director's vested RSUs (in shares)	(31,082)
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	40,259,275	2,778,111	3,029,900	122,585