Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity (Details)

v3.21.2
Stockholders' Equity (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Aug. 31, 2021
USD ($)
Aug. 06, 2021
USD ($)
$ / shares
shares
Mar. 31, 2018
shares
Mar. 31, 2021
USD ($)
shares
Sep. 30, 2021
USD ($)
shares
Sep. 30, 2020
USD ($)
Apr. 29, 2020
$ / shares
shares
Class of Stock [Line Items]              
Equity issuance costs         $ 10,893 $ 3,091  
Proceeds from warrant exercises         $ 8,177 $ 0  
Conversion ratio         1    
Convertible Preferred Stock              
Class of Stock [Line Items]              
Number of shares issued in transaction (in shares) | shares     6,100,000        
Common Stock Purchase Warrants, One | Term loan | 2019 Term Loan, due March 2022              
Class of Stock [Line Items]              
Number of shares for purchase under warrant (in shares) | shares       6,000,000      
Proceeds from warrant exercises       $ 8,200      
2020 Warrant | Senior note | 2020 Unsecured Note              
Class of Stock [Line Items]              
Number of shares for purchase under warrant (in shares) | shares             20,000,000
Common stock purchase price (in dollars per share) | $ / shares             $ 1.542
Equity Offering In Aug 2021 | Common Stock              
Class of Stock [Line Items]              
Number of shares issued in transaction (in shares) | shares   35,000,000          
Sale of stock, price per share (in dollars per share) | $ / shares   $ 3.00          
Net proceeds from sale of stock   $ 100,800          
Option to purchase additional shares (in shares)   $ 5,300          
Option to purchase additional shares, period   30 days          
Over-Allotment Option | Common Stock              
Class of Stock [Line Items]              
Net proceeds from sale of stock $ 15,100            
At-the-Market Program              
Class of Stock [Line Items]              
Number of shares issued in transaction (in shares) | shares         66,400,000    
Net proceeds from sale of stock         $ 193,300    
Sale of stock, gross remaining capacity for sale (up to)         $ 334,600