Quarterly report pursuant to Section 13 or 15(d)

Basic and Diluted Net Income (Loss) Per Common Share - Schedule of Basic and Diluted Loss Per Share (Details)

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Basic and Diluted Net Income (Loss) Per Common Share - Schedule of Basic and Diluted Loss Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Earnings Per Share [Abstract]        
Net loss $ (4,028) $ (730) $ (2,859) $ (2,359)
Deemed dividend and accretion of a discount, basic calculation (207) (2,358) (9,491) (2,358)
Net loss attributable to common stockholders, basic calculation $ (4,235) $ (3,088) $ (12,350) $ (4,717)
Number of shares used in per common share calculations: basic calculation 12,120,420 931,859 9,070,655 829,724
Net loss, basic calculation $ (0.33) $ (0.78) $ (0.32) $ (2.84)
Deemed dividend and accretion of a discount, basic calculation (0.02) (2.53) (1.05) (2.84)
Net income (loss) attributable to common stockholders, basic calculation $ (0.35) $ (3.31) $ (1.37) $ (5.68)
Net income (loss), effect of dilutive warrant securities   $ (632) $ (2,191) $ (609)
Deemed dividend and accretion of a discount, effect of dilutive warrant securities  
Net loss attributable to common stockholders, effect of dilutive warrant securities   $ (632) $ (2,191) $ (609)
Number of shares used in per common share calculations: effect of dilutive warrant securities   2,243,597
Net income, effect of dilutive warrant securities   $ (0.68) $ (0.13) $ (0.74)
Deemed dividend and accretion of a discount, effect of dilutive warrant securities   0.21
Net loss attributable to common stockholders, effect of dilutive warrant securities   $ (0.68) $ 0.08 $ (0.74)
Net income (loss), diluted calculation   $ (1,362) $ (5,050) $ (2,968)
Deemed dividend and accretion of a discount, diluted calculation   (2,358) (9,491) (2,358)
Net loss attributable to common stockholders, diluted calculation   $ (3,720) $ (14,541) $ (5,326)
Number of shares used in per common share calculations: diluted calculation 12,120,420 931,859 11,314,252 829,724
Net income (loss), diluted calculation $ (0.33) $ (1.46) $ (0.45) $ (3.58)
Deemed dividend and accretion of a discount, diluted calculation (0.02) (2.53) (0.84) (2.84)
Net loss attributable to common stockholders, diluted calculation $ (0.35) $ (3.99) $ (1.29) $ (6.42)