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Regulatory Requirements - Narrative (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]    
Number of days from fiscal year end that servicer is obliged to provide audited financial statements 90 days  
Capital requirement based on outstanding UPB of owned and subserviced portfolio $ 448.3  
Covenant liquidity requirement 115.3  
Capital 517.8  
Cash and cash equivalents $ 201.6 $ 208.0
Percentage portfolio of loans serviced or subserviced 2.00%  
Amount 169,700.0 199,600.0
Percentage of portfolio to total forward owned servicing 11.00%  
Percentage of government-insured loans UPB to total UPB serviced and sub-serviced 6.00%  
Debt Instrument, Covenant Compliance, Eligible Liquidity $ 238.9  
Owned Mortgage Servicing Rights    
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]    
Amount 122,700.0 126,200.0
Owned Mortgage Servicing Rights | Unpaid Principal Balance    
Compliance with Regulatory Capital Requirements for Mortgage Companies [Line Items]    
Amount 18,600.0