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Residential Whole Loans - Allowance for Credit Losses (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | $ 20,451 | $ 35,314
Current provision/(reversal) | (460) | 315
Write-offs | (379) |
Write-offs | (379) | (2,567)
Ending balance | 19,612 | 33,062
Allowance for loan loss | 19,612 | 33,062
Loans | 1,484,370 |
Non-QM loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | 1,870 | 7,359
Current provision/(reversal) | (189) | (214)
Write-offs | 0 |
Write-offs |  | 0
Ending balance | 1,681 | 7,145
Allowance for loan loss | 1,681 | 7,145
Transitional loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | 2,588 | 5,223
Current provision/(reversal) | (473) | 406
Write-offs | (416) |
Write-offs |  | (2,003)
Ending balance | 1,699 | 3,626
Allowance for loan loss | 1,699 | 3,626
Loans | 21,900 | 46,400
Single-family Rental Loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | 4,355 | 1,277
Current provision/(reversal) | 228 | 514
Write-offs | 59 |
Write-offs |  | (451)
Ending balance | 4,642 | 1,340
Allowance for loan loss | 4,642 | 1,340
Loans | 10,600 |
Seasoned performing loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | 21 | 48
Current provision/(reversal) | (1) | (2)
Write-offs | 0 |
Write-offs |  | 0
Ending balance | 20 | 46
Allowance for loan loss | 20 | 46
Purchased Credit Deteriorated Loans |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | 11,617 | 21,407
Current provision/(reversal) | (25) | (389)
Write-offs | (22) |
Write-offs |  | (113)
Ending balance | 11,570 | 20,905
Allowance for loan loss | 11,570 | 20,905
Loans | 50,500 | 62,000
Unfunded Loan Commitment |  |
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Ending balance | 0 | 16
Commitment to lend, unfunded | 2,000 | 6,800
Allowance for loan loss | $ 0 | $ 16

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- Definition Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (1) -Publisher SEC Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (a) -Subparagraph (3) -Publisher SEC Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name Regulation S-K (SK) -Number 229 -Section 1405 -Paragraph (c) -Publisher SEC Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(7)(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(1) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
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