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Mortgage Servicing Assets - Schedule of Range and Weighted-Average of Significant Unobservable Inputs (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2025 | Dec. 31, 2024
Agency commercial mortgage-backed securities | Minimum |  |
Servicing Assets at Fair Value [Line Items] |  |
Expected defaults | 1.00% | 1.00%
Residual cash flows discount rate | 6.96% | 7.00%
Escrow earn rate | 3.94% | 4.62%
Prepayment rate | 8.00% | 8.00%
Agency commercial mortgage-backed securities | Maximum |  |
Servicing Assets at Fair Value [Line Items] |  |
Expected defaults | 2.00% | 2.00%
Residual cash flows discount rate | 10.84% | 10.61%
Escrow earn rate | 4.09% | 4.70%
Prepayment rate | 45.00% | 45.00%
Agency commercial mortgage-backed securities | Weighted-Average |  |
Servicing Assets at Fair Value [Line Items] |  |
Expected defaults | 1.01% | 1.01%
Residual cash flows discount rate | 10.58% | 10.31%
Escrow earn rate | 4.08% | 4.69%
Prepayment rate | 10.05% | 10.29%
Agency residential mortgage-backed securities | Minimum |  |
Servicing Assets at Fair Value [Line Items] |  |
Residual cash flows discount rate | 6.50% | 6.50%
Prepayment rate | 6.01% | 5.42%
Servicing cost | $ 70.00 | $ 70.00
Agency residential mortgage-backed securities | Maximum |  |
Servicing Assets at Fair Value [Line Items] |  |
Residual cash flows discount rate | 8.75% | 8.75%
Prepayment rate | 33.07% | 46.30%
Servicing cost | $ 4,332 | $ 4,332
Agency residential mortgage-backed securities | Weighted-Average |  |
Servicing Assets at Fair Value [Line Items] |  |
Residual cash flows discount rate | 6.62% | 6.61%
Prepayment rate | 8.33% | 7.69%
Servicing cost | $ 76.47 | $ 75.99

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- Definition Discount rate used to estimate the fair value of servicing assets and servicing liabilities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-2 + Details
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- Definition Percentage of contractually collectible principal associated with a financial asset expected not to be collected due to default by the borrower. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-2 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(4)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-4 + Details
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