Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Balance Sheets (Parenthetical)

v3.20.1
Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares
Mar. 31, 2020
Dec. 31, 2019
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, shares authorized (in shares) 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
Series E Preferred Stock [Member]    
Redeemable convertible preferred, par value (in dollars per share) $ 0.001 $ 0.001
Redeemable convertible preferred, shares authorized (in shares) 2,900,000 0
Redeemable convertible preferred, shares issued (in shares) 1,387,378 1,387,378
Redeemable convertible preferred, shares outstanding (in shares) 1,387,378 1,387,378