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Unaudited Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Revenue:        
Total operating revenue $ 71,000 $ 133,000 $ 155,000 $ 339,000
Cost of sales:        
Cost of product sales $ 67,000 $ 64,000 $ 83,000 $ 165,000
Type of Cost, Good or Service [Extensible List] Product Sales Product Sales Product Sales Product Sales
Gross profit $ 4,000 $ 69,000 $ 72,000 $ 174,000
Operating expenses:        
Research and development 1,377,000 1,308,000 2,694,000 2,428,000
Selling, general and administrative 4,744,000 2,394,000 6,939,000 5,255,000
Amortization expense 49,000 89,000 106,000 215,000
Total operating expenses 6,170,000 3,791,000 9,739,000 7,898,000
Operating loss (6,166,000) (3,722,000) (9,667,000) (7,724,000)
Other income (expense):        
Other income   56,000   63,000
Change in fair value of derivative financial instruments   (1,000)   3,000
Foreign exchange gain (loss) 185,000 306,000 324,000 (460,000)
Total other income (expense) 185,000 361,000 324,000 (394,000)
Net loss (5,981,000) (3,361,000) (9,343,000) (8,118,000)
Other comprehensive loss:        
Foreign currency translation adjustments (185,000) (255,000) (313,000) 381,000
Comprehensive loss $ (6,166,000) $ (3,616,000) $ (9,656,000) $ (7,737,000)
Net loss per share        
Basic $ (2.58) $ (2.90) $ (4.29) $ (7.85)
Diluted $ (2.58) $ (2.90) $ (4.29) $ (7.85)
Weighted average shares outstanding        
Basic 2,317,389 1,160,661 2,179,878 1,033,692
Diluted 2,317,389 1,160,661 2,179,878 1,033,692
Product Sales        
Revenue:        
Total operating revenue $ 63,000 $ 126,000 $ 140,000 $ 317,000
Fee Revenue        
Revenue:        
Total operating revenue 0 0 0 9,000
License Revenue        
Revenue:        
Total operating revenue $ 8,000 $ 7,000 $ 15,000 $ 13,000