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
Senior common stock, par value (in dollars per share) $ 0.001 $ 0.001
Senior common stock, shares authorized (in shares) 950,000 950,000
Senior common stock, shares issued (in shares) 750,372 806,435
Senior common stock, shares outstanding (in shares) 750,372 806,435
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 60,290,000 86,290,000
Common stock, shares issued (in shares) 35,331,970 32,593,651
Common stock, shares outstanding (in shares) 35,331,970 32,593,651
Series D and E Preferred Stock    
Redeemable preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable preferred stock, liquidation preference (in dollars per share) $ 25 $ 25
Redeemable preferred stock, shares authorized (in shares) 12,760,000 12,760,000
Redeemable preferred stock, shares issued (in shares) 6,571,003 6,269,555
Redeemable preferred stock, shares outstanding (in shares) 6,571,003 6,269,555
Series F Preferred Stock    
Redeemable preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable preferred stock, liquidation preference (in dollars per share) $ 25 $ 25
Redeemable preferred stock, shares authorized (in shares) 26,000,000 0
Redeemable preferred stock, shares issued (in shares) 116,674 0
Redeemable preferred stock, shares outstanding (in shares) 116,674 0