Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Pandora (Details)

v3.10.0.1
Related Party Transactions - Pandora (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Sep. 22, 2017
USD ($)
$ / shares
shares
Dec. 31, 2020
trading_day
$ / shares
Jun. 30, 2018
USD ($)
$ / shares
shares
Jun. 30, 2018
USD ($)
director
$ / shares
shares
Jun. 30, 2017
USD ($)
Jun. 09, 2022
Sep. 22, 2020
Dec. 31, 2017
USD ($)
Related Party Transaction [Line Items]                
Investment in convertible preferred stock       $ 6,138 $ 302,526      
Preferred stock, par value (in dollars per share) | $ / shares     $ 0.001 $ 0.001        
Pandora                
Related Party Transaction [Line Items]                
Fair value of investment     $ 597,921 $ 597,921       $ 480,472
Pandora | Level 2                
Related Party Transaction [Line Items]                
Fair value of investment     $ 597,921 $ 597,921       $ 480,472
Pandora | Series A Preferred Stock                
Related Party Transaction [Line Items]                
Number of shares issued (in shares) | shares 480,000              
Investee | Pandora                
Related Party Transaction [Line Items]                
Investment in convertible preferred stock $ 480,000              
Investment ownership percentage     18.00% 18.00%        
Ownership percentage on an as-converted basis     15.00% 15.00%        
Accrued dividends     $ 25,684 $ 25,684        
Unrealized gain on investment     $ 86,074 $ 117,449        
Minimum ownership percentage for director designation, converted basis     50.00% 50.00%        
Minimum ownership percentage for designation of two directors, converted basis     75.00% 75.00%        
Number of directors designated | director       2        
Investee | Pandora | Series A Preferred Stock                
Related Party Transaction [Line Items]                
Preferred stock, par value (in dollars per share) | $ / shares $ 0.0001              
Price per share (in dollars per share) | $ / shares     $ 10.50 $ 10.50        
Common shares issued upon conversion (in shares) | shares     95.2381 95.2381        
Preferred stock dividend rate, percentage       6.00%        
Liquidation preference     $ 505,684 $ 505,684        
Percentage of liquidation preference 100.00%              
Investee | Pandora | Series A Preferred Stock | Forecast                
Related Party Transaction [Line Items]                
Percentage of liquidation preference           100.00% 100.00%  
Convertible preferred stock, stock trigger price (in dollars per share) | $ / shares   $ 18.375            
Convertible preferred stock, threshold trading days | trading_day   20            
Convertible preferred stock, threshold consecutive trading days | trading_day   30