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Other Investments - Servicing Advance Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Schedule of Investments [Line Items]    
Total Servicer Advance Receivables $ 245,181 $ 310,953
Servicer advance financing    
Schedule of Investments [Line Items]    
Principal and interest advances 89,816 94,148
Escrow advances (taxes and insurance advances) 117,971 172,847
Corporate advances $ 37,394 $ 43,958