CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Scenario, Previously Reported [Member] Common Stock [Member]	Scenario, Previously Reported [Member] Additional Paid-in Capital [Member]	Scenario, Previously Reported [Member] Accumulated Deficit [Member]	Scenario, Previously Reported [Member]	Revision of Prior Period Error Correction Adjustment Accumulated Deficit [Member]	Revision of Prior Period Error Correction Adjustment	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balance at Dec. 31, 2020							$ 1,575	$ 536,263	$ (525,866)	$ 11,972
Balance (in shares) at Dec. 31, 2020							157,512,652
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued (Note 15)								429		429
Shares issued under the at-the-market offering agreement, net (Note 15)							$ 19	1,681		1,700
Shares issued under the at-the-market offering agreement, net (Note 15) (in shares)							1,856,960
Warrants exercised							$ 31	984		1,015
Warrants exercised (in shares)							3,100,000
Net loss									(3,178)	(3,178)
Balance at Mar. 31, 2021							$ 1,625	539,357	(529,044)	11,938
Balance (in shares) at Mar. 31, 2021							162,469,612
Balance at Dec. 31, 2020							$ 1,575	536,263	(525,866)	11,972
Balance (in shares) at Dec. 31, 2020							157,512,652
Increase (Decrease) in Stockholders' Equity
Net loss										(3,577)
Balance at Sep. 30, 2021							$ 1,628	540,416	(529,443)	12,601
Balance (in shares) at Sep. 30, 2021							162,804,612
Balance at Mar. 31, 2021							$ 1,625	539,357	(529,044)	11,938
Balance (in shares) at Mar. 31, 2021							162,469,612
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued and restricted stock awards granted (Note 15)							$ 3	984		987
Stock compensation accrued and restricted stock awards granted (Note 15) (in shares)							335,000
Net loss									(810)	(810)
Balance at Jun. 30, 2021							$ 1,628	540,341	(529,854)	12,115
Balance (in shares) at Jun. 30, 2021							162,804,612
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued (Note 15)								75		75
Net loss									411	411
Balance at Sep. 30, 2021							$ 1,628	540,416	(529,443)	12,601
Balance (in shares) at Sep. 30, 2021							162,804,612
Balance at Dec. 31, 2021	$ 1,628	$ 540,518	$ (527,961)	$ 14,185	$ (93)	$ (93)	$ 1,628	540,518	(528,054)	14,092
Balance (in shares) at Dec. 31, 2021	162,804,612						162,804,612
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued (Note 15)								149		149
KELTIP shares issued net of shares relinquished to cover withholding taxes (Note 15)							$ 11	(240)		(229)
KELTIP shares issued net of shares relinquished to cover withholding taxes (Note 15) (in shares)							1,123,380
Net loss									(316)	(316)
Balance at Mar. 31, 2022							$ 1,639	540,427	(528,370)	13,696
Balance (in shares) at Mar. 31, 2022							163,927,992
Balance at Dec. 31, 2021	$ 1,628	$ 540,518	$ (527,961)	$ 14,185	$ (93)	$ (93)	$ 1,628	540,518	(528,054)	14,092
Balance (in shares) at Dec. 31, 2021	162,804,612						162,804,612
Increase (Decrease) in Stockholders' Equity
Net loss										(5,826)
Balance at Sep. 30, 2022							$ 1,675	541,835	(533,880)	9,630
Balance (in shares) at Sep. 30, 2022							167,477,992
Balance at Mar. 31, 2022							$ 1,639	540,427	(528,370)	13,696
Balance (in shares) at Mar. 31, 2022							163,927,992
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued and restricted stock awards granted (Note 15)							$ 5	195		200
Stock compensation accrued and restricted stock awards granted (Note 15) (in shares)							500,000
Warrants exercised							$ 30	1,020		1,050
Warrants exercised (in shares)							3,000,000
Net loss									(2,813)	(2,813)
Balance at Jun. 30, 2022							$ 1,674	541,642	(531,183)	12,133
Balance (in shares) at Jun. 30, 2022							167,427,992
Increase (Decrease) in Stockholders' Equity
Stock compensation accrued and restricted stock awards granted (Note 15)							$ 1	193		194
Stock compensation accrued and restricted stock awards granted (Note 15) (in shares)							50,000
Net loss									(2,697)	(2,697)
Balance at Sep. 30, 2022							$ 1,675	$ 541,835	$ (533,880)	$ 9,630
Balance (in shares) at Sep. 30, 2022							167,477,992