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Investment in Convertible Notes (Details) - USD ($)
3 Months Ended 6 Months Ended
Oct. 11, 2019
Jul. 19, 2019
Jun. 30, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Mar. 09, 2021
Jul. 30, 2020
Debt Securities, Available-for-sale [Line Items]                  
Monthly installment receivable $ 1,000,000                
Unrealized gain on investment in convertible notes     $ 0 $ 5,204,000 $ 469,000 $ 0 $ 5,673,000    
Convertible Promissory Notes                  
Debt Securities, Available-for-sale [Line Items]                  
Investment purchase $ 25,000,000.0 $ 30,000,000.0 $ 32,100,000     $ 32,100,000   $ 25,000,000 $ 25,000,000
Investment interest rate   3.00%              
Convertible Promissory Notes | Subordinated Debt                  
Debt Securities, Available-for-sale [Line Items]                  
Investment purchase   $ 5,000,000.0           $ 5,000,000 $ 5,000,000
Investment maturity   6 months