Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Additional Information (Details)

v3.20.4
Stockholders' Equity - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Sep. 30, 2020
Class Of Stock [Line Items]      
Repurchase of common stock 33,926 41,699  
Payment for repurchase of common stock $ 383 $ 343  
Series E Convertible Preferred Stock      
Class Of Stock [Line Items]      
Preferred stock, outstanding 47,840 47,840 47,840
Repurchased shares of preferred stock   30,000  
Aggregate purchase price of convertible preferred stock   $ 3