Residential Investor Loans - Schedule of Characteristics of Residential Investor Loans (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
Sep. 30, 2025	Dec. 31, 2024
Residential Investor Bridge, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	$ 101,000
Unsecuritized Term \| Residential Investor Term, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
UPB	163,683	$ 177,618
Average UPB of loans	1,129	1,759
Fair value of loans	$ 157,339	$ 158,637
Weighted average coupon	6.94%	6.84%
Weighted average remaining loan term (years)	13 years	9 years
Market value of loans pledged as collateral under debt facilities	$ 86,413	$ 120,417
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	0	27,529
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	0	27,529
Fair value of loans in foreclosure	0	8,500
Unsecuritized Term \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential Investor Term, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	44,491	12,366
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	53,756	33,065
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	5,973	8,266
Term at CAFL \| Residential Investor Term, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
UPB	2,251,096	2,639,485
Average UPB of loans	3,063	3,084
Fair value of loans	$ 2,143,226	$ 2,485,069
Weighted average coupon	5.28%	5.35%
Weighted average remaining loan term (years)	4 years	4 years
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	$ 37,206	$ 24,648
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	5,315	2,465
Term at CAFL \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential Investor Term, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	171,284	194,143
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	4,078	3,734
Business Purpose Bridge Loans \| Residential Investor Bridge, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
UPB	665,040	1,166,213
Average UPB of loans	1,945	5,350
Fair value of loans	$ 625,932	$ 1,120,281
Weighted average coupon	8.93%	9.11%
Weighted average remaining loan term (years)	1 year	1 year
Market value of loans pledged as collateral under debt facilities	$ 400,527	$ 1,070,327
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	22,838	86,260
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	22,838	6,635
Fair value of loans in foreclosure	17,128	67,858
Business Purpose Bridge Loans \| Residential Investor Bridge, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
UPB	917,991	810,285
Average UPB of loans	1,237	1,605
Fair value of loans	$ 931,100	$ 823,103
Weighted average coupon	9.41%	9.76%
Weighted average remaining loan term (years)	1 year	1 year
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	$ 19,803	$ 3,663
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	1,238	916
Business Purpose Bridge Loans \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential Investor Bridge, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Fair value of loans	159,437	102,321
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	198,858	129,229
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	11,048	8,077
Business Purpose Bridge Loans \| Financing Receivables, Equal to Greater than 90 Days Past Due \| Residential Investor Bridge, Securitized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	26,938	20,964
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	$ 1,418	$ 1,233

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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This item represents the aggregate fair value of loans held as assets that are 90 days or more past due for which the fair value option has been elected.

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Amount of realized and unrealized gain (loss) on investment.

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Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types.

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