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Shareholders Equity (Details)
3 Months Ended 12 Months Ended
May 03, 2021
shares
May 27, 2020
May 05, 2020
$ / shares
shares
Apr. 22, 2020
Apr. 20, 2020
$ / shares
shares
Mar. 31, 2021
$ / shares
shares
Dec. 31, 2020
$ / shares
shares
Dec. 31, 2018
$ / shares
shares
Apr. 20, 2021
Apr. 24, 2020
USD ($)
shares
Apr. 19, 2020
$ / shares
shares
Common shares                      
Reverse stock split ratio       50 50            
Common shares, shares authorized         16,000,000 32,000,000 32,000,000     32,000,000 800,000,000
Fractional common shares issued                   0  
Common shares, par value (in dollars per share) | $ / shares         $ 0.05 $ 0.05 $ 0.05       $ 0.001
Common stock shares authorized increase percentage                 100.00%    
Common stock shares authorized amount | $                   $ 1,600,000  
Preferred stock, rate (as a percent)           6.00% 6.00%        
Preferred shares, par value (in dollars per share) | $ / shares           $ 0.001 $ 0.001        
Preferred stock, liquidation preference (in dollars per share) | $ / shares           $ 50 $ 50        
Minimum percentage beneficial ownership to trigger rights exercise (as a percent)   10.00% 4.90%                
Percentage discount that a rights holder is entitled to when purchasing additional shares (as a percent)     50.00%                
Price per share at which the Rights may be redeemed     0.01                
Exchange ratio after rights trigger     1                
Preferred stock, shares outstanding           4,870,000 4,870,000        
Specific Shareholder                      
Common shares                      
Minimum percentage beneficial ownership to trigger rights exercise (as a percent)     10.00%                
Acquiring Company                      
Common shares                      
Percentage discount that a rights holder is entitled to when purchasing additional shares (as a percent)     50.00%                
Minimum                      
Common shares                      
Reverse stock split ratio         15            
Additional ownership percentage acquired for right trigger     0.50%                
Maximum                      
Common shares                      
Reverse stock split ratio         50            
Mandatory Convertible Preferred Shares                      
Common shares                      
Preferred stock, shares issued               5,750,000      
Preferred stock, rate (as a percent)               6.00%      
Preferred shares, par value (in dollars per share) | $ / shares               $ 0.001      
Preferred stock, liquidation preference (in dollars per share) | $ / shares               $ 50      
Preferred stock, shares outstanding           4,900,000 4,900,000        
Series B Preferred Stock                      
Common shares                      
Preferred shares, par value (in dollars per share) | $ / shares     $ 0.001                
Number of right share for each outstanding common share     1                
Number of shares each right entitled to purchase     0.001                
Exercise price (in dollars per share) | $ / shares     $ 58.08                
Common Stock | Minimum                      
Common shares                      
Conversion ratio               0.1144      
Common Stock | Maximum                      
Common shares                      
Conversion ratio               0.1372      
Common Stock | Mandatory Convertible Preferred Shares                      
Common shares                      
Number of consecutive trading days to calculate average share price of common stock               20 days      
Common Stock | Mandatory Convertible Preferred Shares | Forecast                      
Common shares                      
Shares issued 668,000                    
Common Stock | Mandatory Convertible Preferred Shares | Minimum                      
Common shares                      
Conversion ratio               0.1075      
Common Stock | Mandatory Convertible Preferred Shares | Maximum                      
Common shares                      
Conversion ratio               0.1290