Annual report pursuant to Section 13 and 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
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
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 $ 3,052,016 $ 2,984,937 $ 2,191,578 $ 1,596,153
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 $ 3,000,000 $ 3,000,000