Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parenthetical)

v3.20.4
Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2020
Dec. 31, 2019
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 65,544,073 91,514,600
Common stock, shares issued (in shares) 26,219,019 20,936,658
Common stock, shares outstanding (in shares) 26,219,019 20,936,658
Series A Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 2,000,000 2,000,000
Preferred stock, shares issued (in shares) 1,150,000 1,150,000
Preferred stock, shares outstanding (in shares) 1,150,000 1,150,000
Series B Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 6,456,065 6,485,400
Preferred stock, shares issued (in shares) 5,956,065 4,755,869
Preferred stock, shares outstanding (in shares) 5,956,065 4,755,869
Series C Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference (in dollars per share) $ 25.00 $ 25.00
Preferred stock, shares authorized (in shares) 25,999,862 0
Preferred stock, shares issued (in shares) 1,088,435 0
Preferred stock, shares outstanding (in shares) 1,088,435 0