Fair Value - Schedule of Significant Assumptions used in Valuation (Details)	Dec. 31, 2025 Employees year USD ($)	Dec. 31, 2024 Employees year USD ($)
Life in years | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	4.7	4.2
Life in years | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	4.7	4.2
Life in years | Mortgage Servicing Rights Pledged
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	5.2	4.7
Weighted average discount rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.098	0.100
Weighted average discount rate | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.048	0.054
Weighted average discount rate | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.047	0.053
Weighted average discount rate | Mortgage Servicing Rights Pledged
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.096	0.103
Weighted average prepayment speed | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.189	0.213
Weighted average prepayment speed | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.189	0.213
Weighted average prepayment speed | Mortgage Servicing Rights Pledged
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.052	0.054
Weighted average delinquency rate | Mortgage Servicing Rights Pledged
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.033	0.030
Weighted average cost to service (in dollars) | Mortgage Servicing Rights Pledged
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | $	124	133
Minimum | Life in years | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	0.6	0.4
Minimum | Life in years | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	0.6	0.4
Minimum | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.089	0.079
Minimum | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.105	0.108
Minimum | Weighted average discount rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.095	0.095
Minimum | Weighted average prepayment speed | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.131	0.131
Minimum | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.040	0.037
Minimum | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.057	0.056
Minimum | Weighted average prepayment speed | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.054	0.057
Minimum | Weighted average prepayment speed | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	0.131	0.131
Minimum | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.004	0.004
Minimum | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.048	0.052
Minimum | Weighted average delinquency rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.090	0.080
Minimum | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	67	67
Minimum | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	92	93
Minimum | Weighted average cost to service (in dollars) | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	158	177
Maximum | Life in years | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	7.8	7.6
Maximum | Life in years | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	7.8	7.6
Maximum | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.151	0.160
Maximum | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.150	0.153
Maximum | Weighted average discount rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.145	0.145
Maximum | Weighted average prepayment speed | Loans Held for Investment
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.266	0.316
Maximum | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.100	0.088
Maximum | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.106	0.125
Maximum | Weighted average prepayment speed | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.075	0.087
Maximum | Weighted average prepayment speed | HMBS - Related Borrowings
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | year	0.266	0.316
Maximum | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.010	0.012
Maximum | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.091	0.107
Maximum | Weighted average delinquency rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.177	0.183
Maximum | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	69	70
Maximum | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	108	117
Maximum | Weighted average cost to service (in dollars) | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	189	226
Weighted Average | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.092	0.098
Weighted Average | Weighted average discount rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.106	0.108
Weighted Average | Weighted average discount rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.104	0.109
Weighted Average | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.068	0.062
Weighted Average | Weighted average prepayment speed | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.077	0.076
Weighted Average | Weighted average prepayment speed | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.064	0.078
Weighted Average | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.005	0.005
Weighted Average | Weighted average delinquency rate | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.056	0.060
Weighted Average | Weighted average delinquency rate | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	0.120	0.104
Weighted Average | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | GSE
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | $	67	67
Weighted Average | Weighted average cost to service (in dollars) | Fair Value Agency Mortgage Servicing Rights | Ginnie Mae
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs	96	98
Weighted Average | Weighted average cost to service (in dollars) | Fair Value Non Agency Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Measurement inputs | $	173	193