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Consolidated Statements of Operations and Comprehensive Loss - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cost of goods sold $ (640) $ (719)
Gross profit 1,006 861
Operating expenses:    
Research and development expenses 11,201 9,490
Selling, general and administrative expenses 11,108 11,279
Total operating expenses 22,309 20,769
Operating loss (21,303) (19,908)
Change in fair value of the warrant liability, net (2,832) 17,493
Loss on issuance of financial instrument   (1,720)
Interest expense (175) (4,746)
Other income 154 2
Net loss (24,156) (8,879)
Deemed dividend for triggering of warrant down round feature (55)  
Net loss attributable to common stockholders (24,211) (8,879)
Net loss (24,156) (8,879)
Other comprehensive (loss) income:    
Foreign currency translation adjustments (132) (22)
Total other comprehensive loss $ (24,288) $ (8,901)
Common share data:    
Basic loss per common share* [1] $ (8.35) $ (342.83)
Diluted loss per common share* [1] $ (8.35) $ (342.83)
Weighted average number of basic shares outstanding* [1] 2,897,827 25,900
Weighted average number of diluted shares outstanding* [1] 2,897,827 25,900
Product Revenue [Member]    
Revenue $ 1,156 $ 1,101
Other Revenue [Member]    
Revenue $ 490 $ 479
[1] * reflects, one-for-seven hundred (1:700) reverse stock split effected on December 24, 2019.