Residential Investor Loans - Schedule of Classifications and Carrying Values of Residential Investor Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Held-for-sale at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 513,353	$ 237,224
Held-for-sale at fair value | Residential Investor Term, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	202,422	158,637
Held-for-sale at fair value | Residential Investor Term, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-sale at fair value | Residential Investor Bridge, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	310,931	78,587
Loans held at lower of cost or market	14,000
Held-for-sale at fair value | Residential Investor Bridge, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-investment at fair value
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	3,103,311	4,349,866
Held-for-investment at fair value | Residential Investor Term, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	0
Held-for-investment at fair value | Residential Investor Term, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,985,910	2,485,069
Held-for-investment at fair value | Residential Investor Bridge, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	0	1,041,694
Held-for-investment at fair value | Residential Investor Bridge, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,117,401	823,103
Residential Investor Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	3,616,664	4,587,090
Residential Investor Loans | Residential Investor Term, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	202,422	158,637
Residential Investor Loans | Residential Investor Term, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,985,910	2,485,069
Residential Investor Loans | Residential Investor Bridge, Unsecuritized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	310,931	1,120,281
Residential Investor Loans | Residential Investor Bridge, Securitized
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 1,117,401	$ 823,103