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Capitalized Mortgage Servicing Rights | 12 Months Ended
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Dec. 31, 2023
Transfers and Servicing [Abstract] |
Capitalized Mortgage Servicing Rights | Capitalized Mortgage Servicing Rights Our capitalized MSRs reflect commercial real estate MSRs derived primarily from loans sold in our Agency Business or acquired MSRs. The weighted average estimated life remaining of our MSRs was 8.0 years and 8.6 years at December 31, 2023 and 2022, respectively. A summary of our capitalized MSR activity is as follows (in thousands):
| Year Ended December 31, 2023 |  | Year Ended December 31, 2022
| Originated |  | Acquired |  | Total |  | Originated |  | Acquired |  | Total
Beginning balance | $ | 386,878 |  |  | $ | 14,593 |  |  | $ | 401,471 |  |  | $ | 395,573 |  |  | $ | 27,161 |  |  | $ | 422,734 |
Additions | 67,612 |  |  | — |  |  | 67,612 |  |  | 83,115 |  |  | — |  |  | 83,115 |
Amortization | (59,182) |  |  | (3,911) |  |  | (63,093) |  |  | (53,449) |  |  | (6,427) |  |  | (59,876) |
Write-downs and payoffs | (12,726) |  |  | (2,010) |  |  | (14,736) |  |  | (38,361) |  |  | (6,141) |  |  | (44,502) |
Ending balance | $ | 382,582 |  |  | $ | 8,672 |  |  | $ | 391,254 |  |  | $ | 386,878 |  |  | $ | 14,593 |  |  | $ | 401,471 |
We collected prepayment fees totaling $6.4 million and $48.2 million during 2023 and 2022, respectively, which are included as a component of servicing revenue, net on the consolidated statements of income. At December 31, 2023 and 2022, we had no valuation allowance recorded on any of our MSRs. The expected amortization of capitalized MSRs recorded at December 31, 2023 is as follows (in thousands):
Year |  | Amortization
2024 |  | $ | 65,500 |
2025 |  | 62,514 |
2026 |  | 56,969 |
2027 |  | 52,366 |
2028 |  | 45,188 |
Thereafter |  | 108,717 |
Total |  | $ | 391,254 |
Based on scheduled maturities, actual amortization may vary from these estimates.

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- Definition The entire disclosure for capitalized mortgage servicing rights, such as weighted average estimated life of remaining of MSR, impairment. + References No definition available. + Details
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