Quarterly report pursuant to Section 13 or 15(d)

Capital Stock - Preferred Stock (Details)

v3.20.2
Capital Stock - Preferred Stock (Details) - USD ($)
$ / shares in Units, $ in Millions
 1 Months Ended 12 Months Ended
Feb. 28, 2017
Dec. 31, 2018
Dec. 31, 2017
Sep. 30, 2020
Dec. 31, 2019
Sale of stock          
Convertible preferred stock, shares outstanding (in shares)       5,003 6,256
Series X and Series Y Convertible Preferred Stock          
Sale of stock          
Number of shares issued for each share of convertible preferred stock that is converted   1,000      
Series X Convertible Preferred Stock          
Sale of stock          
Issuance of stock, net (in shares)     5,003    
Convertible preferred stock, shares outstanding (in shares)       5,003  
Preferred stock conversion price per share   $ 4.03      
Fair value of common stock amount exceeded purchase price of convertible preferred stock $ 5.6        
Series Y Preferred Stock          
Sale of stock          
Issuance of stock, net (in shares)   1,252.772      
Convertible preferred stock, shares outstanding (in shares)       0  
Preferred stock conversion price per share   $ 13.00