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Residential Investor Loans - Schedule of Financing Receivable, Nonaccrual Loans Characteristics by Segment/Strategy Type (Details)	9 Months Ended
	Sep. 30, 2025 USD ($) unit
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Number of units for light to moderate renovation | unit	20
Estimated Fair Value
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	$ 307,111,000
Estimated Fair Value | Residential Bridge Multifamily | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	257,895,000
Estimated Fair Value | Residential Bridge Renovate Build For Rent | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	32,308,000
Estimated Fair Value | Residential Bridge Renovate Build For Rent | Redwood Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	4,841,000
Estimated Fair Value | Residential Bridge Single Asset Bridge | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	637,000
Estimated Fair Value | Residential Bridge Single Asset Bridge | Redwood Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	7,751,000
Estimated Fair Value | Other | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	3,679,000
Total Unpaid Principal Balance
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	358,269,000
Total Unpaid Principal Balance | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	229,136,000
Total Unpaid Principal Balance | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	129,133,000
Total Unpaid Principal Balance | Residential Bridge Multifamily | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	297,975,000
Total Unpaid Principal Balance | Residential Bridge Multifamily | Legacy Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	193,759,000
Total Unpaid Principal Balance | Residential Bridge Multifamily | Legacy Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	104,216,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	40,773,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Legacy Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	15,856,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Legacy Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	24,917,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Redwood Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	4,817,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Redwood Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	4,817,000
Total Unpaid Principal Balance | Residential Bridge Renovate Build For Rent | Redwood Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	0
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	670,000
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Legacy Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	670,000
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Legacy Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	0
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Redwood Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	7,787,000
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Redwood Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	7,787,000
Total Unpaid Principal Balance | Residential Bridge Single Asset Bridge | Redwood Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	0
Total Unpaid Principal Balance | Other | Legacy Investments
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	6,247,000
Total Unpaid Principal Balance | Other | Legacy Investments | Non-Accrual of Contractual Coupon Interest
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	6,247,000
Total Unpaid Principal Balance | Other | Legacy Investments | Non-Accrual of Deferred Interest Only
SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]
Total Non-Accrual Loans	$ 0

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