Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Stockholder Rights Plan (Details)

v3.21.2
Stock-Based Compensation - Stockholder Rights Plan (Details)
May 06, 2019
Vote
$ / shares
Jun. 30, 2021
$ / shares
Mar. 31, 2021
$ / shares
Stockholder Rights Plan      
Preferred stock, par value (in dollars per share)   $ 0.001 $ 0.001
Series B Junior Participating Preferred Stock      
Stockholder Rights Plan      
Preferred stock conversion basis 0.0001    
Purchase price (in dollars per share) $ 5.22    
Preferred stock dividend minimum if declared $ 1.00    
Preferred stock rights ratio over common stock 1,000    
Number of votes per share | Vote 1,000    
Ratio of consideration received in event of conversion or exchange transaction 1,000    
Beneficial ownership of common stock (as a percent) 4.90%