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MORTGAGE SERVICING RIGHTS (Tables) | 6 Months Ended
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Jun. 30, 2024
Transfers and Servicing [Abstract] |
Summary of Activity of Mortgage Servicing Rights | The following table presents the activity of MSRs for the three and six months ended June 30, 2024 and June 30, 2023:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Balance — beginning of period |  | $ | 1,216,483 |  |  | $ | 1,112,161 |  |  | $ | 1,161,357 |  |  | $ | 1,139,539 |
MSRs originated |  | 55,397 |  |  | 44,452 |  |  | 89,631 |  |  | 71,945 |
MSRs purchased |  | 18,648 |  |  | — |  |  | 18,762 |  |  | — |
Changes in fair value: |  |  |  |  |  |  |  |
Due to collection/realization of cash flows |  | (18,511) |  |  | (15,890) |  |  | (30,630) |  |  | (27,060) |
Due to changes in valuation model inputs or assumptions |  | 20,645 |  |  | 43,780 |  |  | 53,542 |  |  | 79 |
Balance — end of period |  | $ | 1,292,662 |  |  | $ | 1,184,503 |  |  | $ | 1,292,662 |  |  | $ | 1,184,503 |
Summary of Weighted Average Discount Rate, Prepayment Speed and Cost to Service Assumptions Used to Determine Fair Value of MSRs | The following table presents the unobservable input assumptions used to determine the fair value of MSRs:
|  | June 30, 2024 |  | December 31, 2023
Unobservable Input |  | Range (Weighted Average)
Discount rate |  | 9.6% - 15.5% (10.8%) |  | 9.6% - 15.5% (10.9%)
Prepayment rate |  | 6.0% - 42.9% (7.9%) |  | 6.4% - 32.0% (8.5%)
Cost to service (per loan) |  | $71.9 - $466.1 ($96.2) |  | $72.1 - $366.3 ($96.4)
Summary of Actual Revenue Generated from Servicing Activities | Actual revenue generated from servicing activities included contractually specified servicing fees, as well as late fees and other ancillary servicing revenue, which were recorded within loan servicing and other fees as follows for the three and six months ended June 30, 2024 and June 30, 2023:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands) |  | 2024 |  | 2023 |  | 2024 |  | 2023
Servicing fees from servicing portfolio |  | $ | 66,065 |  |  | $ | 59,410 |  |  | $ | 130,099 |  |  | $ | 118,390 |
Late fees |  | 2,042 |  |  | 1,619 |  |  | 4,098 |  |  | 3,287 |
Other ancillary servicing revenue and fees |  | (398) |  |  | (818) |  |  | (700) |  |  | (1,379) |
Total loan servicing and other fees |  | $ | 67,709 |  |  | $ | 60,211 |  |  | $ | 133,497 |  |  | $ | 120,298 |
Summary of Impact of Adverse Changes on Prepayment Speeds, Discount Rate and Cost to Service at Two Different Data Points | The following table illustrates the impact of adverse changes on the prepayment speeds, discount rate and cost to service at two different data points at June 30, 2024 and December 31, 2023, respectively:
| Prepayment Speeds |  | Discount Rate |  | Cost to Service (per loan)
(in thousands) | 10% Adverse Change |  | 20% Adverse Change |  | 10% Adverse Change |  | 20% Adverse Change |  | 10% Adverse Change |  | 20% Adverse Change
June 30, 2024 |  |  |  |  |  |  |  |  |  |  |
Mortgage servicing rights | $ | (40,735) |  |  | $ | (79,215) |  |  | $ | (53,549) |  |  | $ | (103,281) |  |  | $ | (12,841) |  |  | $ | (25,506) |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Mortgage servicing rights | $ | (36,968) |  |  | $ | (72,701) |  |  | $ | (47,899) |  |  | $ | (93,196) |  |  | $ | (11,315) |  |  | $ | (23,573) |

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- Definition Tabular disclosure of all information related to the key inputs and assumptions (including, at a minimum, but not limited to, and if applicable, quantitative information about discount rates, expected prepayments including the expected weighted-average life of prepayable financial assets, and anticipated credit losses) used in measuring the fair value of assets or liabilities that relate to the transferor's continuing involvement with transferred financial assets, as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4 + Details
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- Definition Tabular disclosure of a sensitivity analysis or stress test showing the hypothetical effect on the fair value of the transferor's interests in transferred financial assets (including any servicing assets or servicing liabilities) of two or more unfavorable variations from the expected levels for each key assumption that is reported, independently determined from any change in another key assumption, and a description of the objectives, methodology, and limitations of the sensitivity analysis or stress test. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481326/860-20-50-4 + Details
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- Definition Tabular disclosure of the activity in the balance of servicing assets (including a description of where changes in fair value are reported in the statement of income for each period for which results of operations are presented), including but not limited to, the following: beginning and ending balances, additions (for instance, through purchases of servicing assets), disposals, changes in fair value during the period resulting from changes in inputs or assumptions used in the valuation model, other changes in fair value along with a description of those changes, and other changes that affect the balance along with a description of those changes. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-3 + Details
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