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Other Investments - Servicing Advance Investments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Investments [Line Items]
Total Servicer Advance Receivables	$ 184,536	$ 240,365
Servicer advance financing
Schedule of Investments [Line Items]
Principal and interest advances	65,365	81,447
Escrow advances (taxes and insurance advances)	86,980	123,541
Corporate advances	$ 32,191	$ 35,377

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