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Residential Investor Loans - Schedule of Characteristics of Residential Investor Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Unsecuritized Term | Residential Investor Term, Unsecuritized
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Unpaid principal balance ("UPB")	$ 187,001	$ 177,618
Average UPB of loans	1,989	1,759
Fair value of loans	$ 169,372	$ 158,637
Weighted average coupon	6.77%	6.84%
Weighted average remaining loan term (years)	10 years	9 years
Market value of loans pledged as collateral under debt facilities	$ 110,136	$ 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	18,469	12,366
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	39,865	33,065
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	7,973	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]
Unpaid principal balance ("UPB")	2,539,929	2,639,485
Average UPB of loans	3,140	3,084
Fair value of loans	$ 2,389,804	$ 2,485,069
Weighted average coupon	5.35%	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	$ 59,449	$ 24,648
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	4,246	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	212,275	194,143
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	4,332	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]
Unpaid principal balance ("UPB")	1,172,533	1,166,213
Average UPB of loans	5,479	5,350
Fair value of loans	$ 1,111,276	$ 1,120,281
Weighted average coupon	9.14%	9.11%
Weighted average remaining loan term (years)	1 year	1 year
Market value of loans pledged as collateral under debt facilities	$ 1,090,743	$ 1,070,327
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	38,225	86,260
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	4,247	6,635
Fair value of loans in foreclosure	27,257	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]
Unpaid principal balance ("UPB")	759,903	810,285
Average UPB of loans	1,692	1,605
Fair value of loans	$ 769,382	$ 823,103
Weighted average coupon	9.55%	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	$ 9,703	$ 3,663
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	1,078	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	202,982	102,321
Unpaid principal balance of loans with 90+ day delinquencies/Unpaid principal balance of loans in foreclosure	243,288	129,229
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	13,516	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	29,083	20,964
Average UPB of 90+ days delinquent loans/Average UPB of loans in foreclosure	$ 1,531	$ 1,233

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