Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights Pledged as Collateral for Financing (Details)

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Mortgage Servicing Rights Pledged as Collateral for Financing (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]        
Mortgage servicing rights, at fair value $ 3,072,445 $ 2,984,937 $ 3,089,963 $ 2,191,578
Asset Pledged as Collateral        
Assets that Continue to be Recognized, Securitized or Asset-backed Financing Arrangement Assets and any Other Financial Assets Managed Together [Line Items]        
Mortgage servicing rights, at fair value $ 2,900,000 $ 3,000,000