Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.20.2
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2020
Dec. 31, 2019
Condensed Consolidated Balance Sheets [Abstract]    
Redeemable Series E preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable Series E preferred stock, shares authorized (in shares) 2,900,000 2,900,000
Redeemable Series E preferred stock, shares issued (in shares) 1,387,378 1,387,378
Redeemable Series E preferred stock, shares outstanding (in shares) 1,387,378 1,387,378
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 88,000,000 88,000,000
Common stock, shares issued (in shares) 48,939,708 47,977,390
Common stock, shares outstanding (in shares) 48,939,708 47,977,390