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Capitalized Mortgage Servicing Rights - Summary of Capitalized MSRs (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Capitalized Mortgage Servicing Rights |  |  |  |
Beginning balance |  |  | $ 391,254 |
Ending balance | $ 380,719 |  | 380,719 |
MSRs |  |  |  |
Capitalized Mortgage Servicing Rights |  |  |  |
Beginning balance | 385,520 | $ 396,634 | 391,254 | $ 401,471
Additions | 14,717 | 18,980 | 27,401 | 32,866
Amortization | (16,887) | (15,605) | (33,518) | (31,020)
Write-downs and payoffs | (2,631) | (5,599) | (4,418) | (8,907)
Ending balance | 380,719 | 394,410 | 380,719 | 394,410
Expected amortization of capitalized MSRs balances |  |  |  |
2024 (six months ending 12/31/2024) | 34,199 |  | 34,199 |
2025 | 65,880 |  | 65,880 |
2026 | 60,425 |  | 60,425 |
2027 | 55,923 |  | 55,923 |
2028 | 48,630 |  | 48,630 |
Thereafter | 115,662 |  | 115,662 |
Total | 380,719 |  | 380,719 |
Originated |  |  |  |
Capitalized Mortgage Servicing Rights |  |  |  |
Beginning balance | 377,747 | 383,636 | 382,582 | 386,878
Additions | 14,717 | 18,980 | 27,401 | 32,866
Amortization | (16,151) | (14,592) | (31,972) | (28,878)
Write-downs and payoffs | (2,154) | (4,757) | (3,852) | (7,599)
Ending balance | 374,159 | 383,267 | 374,159 | 383,267
Acquired |  |  |  |
Capitalized Mortgage Servicing Rights |  |  |  |
Beginning balance | 7,773 | 12,998 | 8,672 | 14,593
Amortization | (736) | (1,013) | (1,546) | (2,142)
Write-downs and payoffs | (477) | (842) | (566) | (1,308)
Ending balance | $ 6,560 | $ 11,143 | $ 6,560 | $ 11,143

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