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Condensed Consolidated Statements Of Shareholders' Deficit - USD ($)
$ in Thousands
Common Stock [Member]
Short-term Debt [Member]
Common Stock [Member]
Convertible Debt [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Short-term Debt [Member]
Additional Paid-in Capital [Member]
Convertible Debt [Member]
Additional Paid-in Capital [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Accumulated Deficit [Member]
Short-term Debt [Member]
Convertible Debt [Member]
Cumulative Effect, Period of Adoption, Adjustment [Member]
Total
Balance, value at Dec. 31, 2019     $ 341       $ 368,345   $ (401,783)       $ (33,097)
Issuance of common stock and warrants in private offerings, net of issuance costs and initial fair value of contingent payment rights     39       2,811           2,850
Issuance of common stock upon exercise of options and warrants     14       487           501
Issuance of common stock and warrants for services     5       219           224
Issuance of convertible debt with beneficial conversion feature             173           173
Issuance of common stock upon conversion $ 22 $ 7   $ 318 $ 187         $ 340 $ 194    
Share-based compensation, net of shares withheld for taxes     3       458           461
Comprehensive loss for the period                 (7,921)       (7,921)
Balance, value at Mar. 31, 2020     431       372,998   (409,704)       (36,275)
Balance, value at Dec. 31, 2019     341       368,345   (401,783)       (33,097)
Comprehensive loss for the period                         (11,506)
Balance, value at Jun. 30, 2020     491       374,464   (413,289)       (38,334)
Balance, value at Mar. 31, 2020     431       372,998   (409,704)       (36,275)
Issuance of common stock and warrants in private offerings, net of issuance costs and initial fair value of contingent payment rights     43       725           768
Issuance of common stock upon exercise of options and warrants     11       363           374
Issuance of common stock and warrants for services     1       13           14
Issuance of common stock upon conversion     1       66           67
Share-based compensation, net of shares withheld for taxes     4       299           303
Comprehensive loss for the period                 (3,585)       (3,585)
Balance, value at Jun. 30, 2020     491       374,464   (413,289)       (38,334)
Balance, value at Dec. 31, 2020     586     $ (1,126) 376,954 $ 279 (421,361)     $ (847) (43,821)
Issuance of common stock and warrants in private offerings, net of issuance costs and initial fair value of contingent payment rights     62       4,734           4,796
Issuance of common stock upon exercise of options and warrants     27       397           424
Issuance of common stock and warrants for services     6       391           397
Issuance of common stock upon conversion   17     459           476    
Share-based compensation, net of shares withheld for taxes     1       952           953
Comprehensive loss for the period                 (2,467)       (2,467)
Balance, value at Mar. 31, 2021     699       382,761   (423,549)       (40,089)
Balance, value at Dec. 31, 2020     586     $ (1,126) 376,954 $ 279 (421,361)     $ (847) (43,821)
Comprehensive loss for the period                         (6,873)
Balance, value at Jun. 30, 2021     727       384,279   (427,955)       (42,949)
Balance, value at Mar. 31, 2021     699       382,761   (423,549)       (40,089)
Issuance of common stock and warrants in private offerings, net of issuance costs and initial fair value of contingent payment rights             (22)           (22)
Issuance of common stock upon exercise of options and warrants     25       373           398
Issuance of common stock and warrants for services     1       230           231
Issuance of common stock upon conversion   $ 1     $ 68           $ 69    
Share-based compensation, net of shares withheld for taxes     1       869           870
Comprehensive loss for the period                 (4,406)       (4,406)
Balance, value at Jun. 30, 2021     $ 727       $ 384,279   $ (427,955)       $ (42,949)