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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Series A Convertible Preferred Shares [Member]
Common Stock [Member]
Additional Paid-in Capital [Member]
Accumulated Deficit [Member]
Total
Balance at Dec. 31, 2017 $ 21 $ 74,766 $ (26,631) $ 48,156
Balance, shares at Dec. 31, 2017 20,877,893      
Net proceeds from the issuance of common stock 1 1
Net proceeds from the issuance of common stock, shares 182,297      
Net loss (8,214) (8,214)
Balance at Dec. 31, 2018 $ 21 74,767 (34,845) 39,943
Balance, shares at Dec. 31, 2018 21,060,190      
Net proceeds from the issuance of common stock 274 274
Net proceeds from the issuance of common stock, shares 214,828      
Issuance of common stock under the promissory note 113 113
Issuance of common stock under the promissory note, shares 95,262      
Net loss (8,330) (8,330)
Balance at Dec. 31, 2019 $ 21 75,154 (43,175) 32,000
Balance, shares at Dec. 31, 2019 21,370,280      
Impact of adoption of ASU 2016-13 new accounting standard for credit losses (9) (9)
Issuance of common stock under the promissory note 226 226
Issuance of common stock under the promissory note, shares 260,495      
Issuance of Series A Convertible Preferred shares & Warrants 4,313 4,313
Issuance of Series A Convertible Preferred shares & Warrants, shares 200,000        
Conversion of Series A Convertible Preferred shares to common stock $ 1 (1)
Conversion of Series A Convertible Preferred shares to common stock, shares (18,525) 332,106      
Series A Convertible Preferred Shares dividends (71) (71)
Net loss (6,900) (6,900)
Balance at Dec. 31, 2020 $ 22 $ 79,692 $ (50,155) $ 29,559
Balance, shares at Dec. 31, 2020 181,475 21,962,881