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Related Party Transactions
3 Months Ended
Mar. 31, 2021
Related Party Transactions [Abstract]  
Related Party Transactions Related Party TransactionsSince the Company’s inception, it has engaged in various transactions with its executive officers and directors, holders of more than 10% of its voting securities, and their affiliates.The related party investor and its affiliates also participated in securitization transactions co-sponsored and serviced by the Company in the three months ended March 31, 2020 by contributing loans and purchasing securitization notes or residual certificates.