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Business Purpose Loans - Schedule unpaid principal balance of business purpose loans (Details) $ in Thousands	Dec. 31, 2023 USD ($)
Residential Term, Single Family Rental | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 93,863
Residential Term, Multifamily | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	58,350
Term Loans, Single Family Rental | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	2,497,851
Term Loans, Multifamily | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	696,280
Residential Bridge Renovate Build For Rent | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	609,450
Bridge Loans, Renovate Build For Rent | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	432,438
Residential Bridge Single Asset Bridge | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	34,959
Bridge Loans, Single Asset Bridge | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	119,130
Residential Bridge Multifamily | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	690,157
Bridge Loans, Multifamily | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	199,994
Residential Bridge Third Party Originated | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	26,391
Bridge Loans, Third Party Originated | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	5,012
Residential Term Loans | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	152,213
Term Loans | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	3,194,131
BPL bridge loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	201,000
BPL bridge loans | HEI at Redwood
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	1,360,957
Bridge Loans | CoreVest
Accounts, Notes, Loans and Financing Receivable [Line Items]
Fair value of loans	$ 756,574

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-04(5)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479617/946-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481990/310-10-45-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479319/326-20-50-5

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