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Unaudited Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Underwritten Public Offering [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
January 2021 Inducement Warrants [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Warrants to Purchase Common Stock [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Exchange Warrants [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Preferred Stock [Member]
Series A Convertible Preferred Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Underwritten Public Offering [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
January 2021 Inducement Warrants [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Warrants to Purchase Common Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Exchange Warrants [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Preferred Stock [Member]
Series B-1 Convertible Preferred Stock [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Underwritten Public Offering [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
January 2021 Inducement Warrants [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Warrants to Purchase Common Stock [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Exchange Warrants [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Preferred Stock [Member]
Series B-2 Convertible Preferred Stock [Member]
Preferred Stock [Member]
Undesignated Preferred Stock [Member]
Undesignated Preferred Stock [Member]
Underwritten Public Offering [Member]
Undesignated Preferred Stock [Member]
January 2021 Inducement Warrants [Member]
Undesignated Preferred Stock [Member]
Warrants to Purchase Common Stock [Member]
Undesignated Preferred Stock [Member]
Exchange Warrants [Member]
Undesignated Preferred Stock [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Undesignated Preferred Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Undesignated Preferred Stock [Member]
Common Stock [Member]
Underwritten Public Offering [Member]
Common Stock [Member]
January 2021 Inducement Warrants [Member]
Common Stock [Member]
Warrants to Purchase Common Stock [Member]
Common Stock [Member]
Exchange Warrants [Member]
Common Stock [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Common Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Underwritten Public Offering [Member]
Additional Paid-in Capital [Member]
January 2021 Inducement Warrants [Member]
Additional Paid-in Capital [Member]
Warrants to Purchase Common Stock [Member]
Additional Paid-in Capital [Member]
Exchange Warrants [Member]
Additional Paid-in Capital [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Additional Paid-in Capital [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Additional Paid-in Capital [Member]
Retained Earnings [Member]
Underwritten Public Offering [Member]
Retained Earnings [Member]
January 2021 Inducement Warrants [Member]
Retained Earnings [Member]
Warrants to Purchase Common Stock [Member]
Retained Earnings [Member]
Exchange Warrants [Member]
Retained Earnings [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Retained Earnings [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Retained Earnings [Member]
Treasury Stock [Member]
AOCI Attributable to Parent [Member]
Underwritten Public Offering [Member]
January 2021 Inducement Warrants [Member]
Warrants to Purchase Common Stock [Member]
Exchange Warrants [Member]
Conversion of Facility Notes into Series B-2 Preferred Stock [Member]
Conversion of Series B-2 Preferred Stock into Common Stock [Member]
Total
Balance at Dec. 31, 2020             $ 0             $ 0             $ 0               $ 0             $ 0             $ 192,062             $ (258,474)                 $ (66,412)
Net Income (loss)             0             0             0               0             0             0             (10,296)                 (10,296)
Stock-based compensation expense             0             0             0               0             0             675             0                 675
Issuance of common stock in exchange for consulting services             0             0             0               0             0             82             0                 82
Net loss             0             0             0               0             0             0             (10,296)                 (10,296)
Issuance of common stock in connection with Public Offering, net of discounts and commissions $ 0             $ 0             $ 0               $ 0             $ 1             $ 49,284             $ 0                 $ 49,285            
Issuance of common stock in connection with the exercise of warrants in the Inducement Transaction, net of discounts and commissions   $ 0             $ 0             $ 0               $ 0             $ 1             $ 40,390             $ 0                 $ 40,391          
Issuance of common stock in connection with the exercise of common stock warrants     $ 0             $ 0             $ 0               $ 0             $ 0             $ 25,593             $ 0                 $ 25,593        
Fair value of warrants issued   0   $ 0         0   $ 0         0   $ 0           0   $ 0         0   $ 0         38,437   $ 15,990         0   $ 0             38,437   $ 15,990      
Issuance of stock as a result of conversion         $ 0 $ 0           $ 0 $ 0           $ 29,056 $ (29,056)             $ 0 $ 0           $ 0 $ 1           $ 0 $ 29,055           $ 0 $ 0               $ 0 $ 29,056  
Deemed dividend related the Inducement Transaction   0             0             0               0             0             (37,444)             0                 (37,444)          
Offering expenses charged to equity             0             0             0               0             0             (1,106)             0                 (1,106)
Balance at Mar. 31, 2021             0             0             0               0             3             353,018             (268,770)                 84,251
Balance at Dec. 31, 2020             0             0             0               0             0             192,062             (258,474)                 (66,412)
Net Income (loss)                                                                                                                     (5,852)
Net loss                                                                                                                     (5,852)
Other comprehensive income                                                                                                                     0
Balance at Sep. 30, 2021             0             0             0               0             4             396,059             (264,326)                 131,737
Balance at Mar. 31, 2021             0             0             0               0             3             353,018             (268,770)                 84,251
Net Income (loss)             0             0             0               0             0             0             6,203                 6,203
Stock-based compensation expense             0             0             0               0             0             318             0                 318
Issuance of common stock in exchange for consulting services             0             0             0               0             0             72             0                 72
Net loss             0             0             0               0             0             0             6,203                 6,203
Issuance of common stock in connection with Public Offering, net of discounts and commissions   0             0             0               0             0             35,455             0                 35,455          
Issuance of common stock in connection with the exercise of common stock warrants     $ 0             $ 0             $ 0               $ 0             $ 0             $ 4,191             $ 0                 $ 4,191        
Fair value of warrants issued   0             0             0               0             0             17,089             0                 17,089          
Deemed dividend related the Inducement Transaction   $ 0             $ 0             $ 0               $ 0             $ 0             $ (16,898)             $ 0                 $ (16,898)          
Offering expenses charged to equity             0             0             0               0             0             (18)             0                 (18)
Balance at Jun. 30, 2021             0             0             0               0             3             393,227             (262,567)                 130,663
Net Income (loss)             0             0             0               0             0             0             (1,759)                 (1,759)
Stock-based compensation expense             0             0             0               0             0             620             0                 620
Issuance of common stock in exchange for consulting services             0             0             0               0             0             73             0                 73
Net loss             0             0             0               0             0             0             (1,759)                 (1,759)
Other comprehensive income                                                                                                                     0
Issuance of common stock in connection with Public Offering, net of discounts and commissions             0             0             0               0             1             1,104             0                 1,105
Issuance of common stock in connection with the exercise of common stock warrants             0             0             0               0             0             1,035             0                 1,035
Balance at Sep. 30, 2021             $ 0             $ 0             $ 0               $ 0             4             396,059             (264,326)                 131,737
Balance at Dec. 31, 2021                                           $ 0                           4             396,957             (267,029) $ (2,814) $ 0             127,118
Net Income (loss)                                           0                           0             0             (1,864) 0 0             (1,864)
Stock-based compensation expense                                           0                           0             918             0 0 0             918
Shares repurchased as part of the Share Repurchase Program                                           0                           (1)             0             0 (4,722) 0             (4,723)
Issuance of common stock in exchange for consulting services                                           0                           0             50             0 0 0             50
Net loss                                           0                           0             0             (1,864) 0 0             (1,864)
Balance at Mar. 31, 2022                                           0                           3             397,925             (268,893) (7,536) 0             121,499
Balance at Dec. 31, 2021                                           0                           4             396,957             (267,029) (2,814) 0             127,118
Net Income (loss)                                                                                                                     (32,522)
Net loss                                                                                                                     (32,522)
Other comprehensive income                                                                                                                     201
Balance at Sep. 30, 2022                                           0                           3             400,677             (299,551) (7,536) 201             93,794
Balance at Mar. 31, 2022                                           0                           3             397,925             (268,893) (7,536) 0             121,499
Net Income (loss)                                           0                           0             0             (24,042) 0 0             (24,042)
Stock-based compensation expense                                           0                           0             1,510             0 0 0             1,510
Issuance of common stock in exchange for consulting services                                           0                           0             50             0 0 0             50
Net loss                                           0                           0             0             (24,042) 0 0             (24,042)
Issuance of common stock as part of the Employee Stock Purchase Plan                                           0                           0             216             0 0 0             216
Balance at Jun. 30, 2022                                           0                           3             399,701             (292,935) (7,536) 0             99,233
Net Income (loss)                                           0                           0             0             (6,616) 0 0             (6,616)
Stock-based compensation expense                                           0                           0             911             0 0 0             911
Issuance of common stock in exchange for consulting services                                           0                           0             65             0 0 0             65
Net loss                                           0                           0             0             (6,616) 0 0             (6,616)
Other comprehensive income                                           0                           0             0             0 0 201             201
Balance at Sep. 30, 2022                                           $ 0                           $ 3             $ 400,677             $ (299,551) $ (7,536) $ 201             $ 93,794