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Mortgage Servicing Rights, Net - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023
Mortgage Servicing Rights |  |  |
Mortgage servicing rights, net | $ 521,872 | $ 531,203 |
Special servicing portfolio | 2,600,000 | 2,600,000 |
Primary Servicing Portfolio |  |  |
Mortgage Servicing Rights |  |  |
Mortgage servicing rights, net | 63,800,000 | 62,200,000 |
Limited Servicing Portfolio, Loans With Mortgage Servicing Rights |  |  |
Mortgage Servicing Rights |  |  |
Mortgage servicing rights, net | 8,700,000 | 10,100,000 |
Limited Servicing Portfolio, Loans Without Mortgage Servicing Rights |  |  |
Mortgage Servicing Rights |  |  |
Mortgage servicing rights, net | 99,100,000 | 101,000,000 |
Discount Rate One |  |  |
Mortgage Servicing Rights |  |  |
Decrease in fair value of servicing rights | 17,100 | 18,100 |
Discount Rate Two |  |  |
Mortgage Servicing Rights |  |  |
Decrease in fair value of servicing rights | $ 33,700 | $ 35,400 |
Minimum |  |  |
Mortgage Servicing Rights |  |  |
Discount rates used in measuring fair value | 6.10% | 6.10% |
Minimum | Discount Rate One |  |  |
Mortgage Servicing Rights |  |  |
Increase in discount rate | 1.00% | 1.00% |
Maximum |  |  |
Mortgage Servicing Rights |  |  |
Discount rates used in measuring fair value | 13.50% | 13.50% |
Maximum | Discount Rate Two |  |  |
Mortgage Servicing Rights |  |  |
Increase in discount rate | 2.00% | 2.00% |
Mortgage Servicing Rights |  |  |
Mortgage Servicing Rights |  |  |
Mortgage servicing rights, net | $ 521,872 |  | $ 550,541
Estimated fair value of MSRs | $ 659,200 | $ 680,600 |

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- Definition Aggregate amount of servicing assets that are subsequently measured at fair value and servicing assets that are subsequently measured using the amortization method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-2 + Details
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- Definition Fair value of an asset representing net future revenue from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements. + 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 45 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481260/860-50-45-2 + Details
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