XML 65 R53.htm IDEA: XBRL DOCUMENT v3.20.2
Redeemable Convertible Preferred Stock (Details)
$ in Millions
1 Months Ended 12 Months Ended
Nov. 01, 2018
shares
May 31, 2020
shares
Apr. 30, 2020
shares
Jan. 31, 2020
shares
Nov. 30, 2018
USD ($)
shares
Dec. 31, 2019
shares
Jun. 30, 2020
USD ($)
installment
shares
Series C Redeemable Convertible Preferred Stock              
Redeemable preferred stock              
Number of shares of common stock issued on conversion of preferred stock   1,858,256 923,819        
Number of preferred shares that had been converted to common stock   1,750 870        
Series E Redeemable Convertible Preferred Stock              
Redeemable preferred stock              
Shares issued (in shares)         35,000    
Net proceeds from public offering | $         $ 30.9    
Number of monthly installments | installment             13
Redemption value for each installment | $             $ 2.7
Shares outstanding (in shares)           500 0
Series E Preferred Stock              
Redeemable preferred stock              
Shares issued (in shares) 35,000            
Number of shares of common stock issued on conversion of preferred stock       500   30,462  
Number of preferred shares that had been converted to common stock       500