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MORTGAGE BANKING OPERATIONS - Single Family MSR Roll Forward (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Additions and amortization: |  |  |  |
Changes in fair value of MSR assumptions | $ 1,963 | $ (785) | $ 816 | $ (1,794)
Single family |  |  |  |
Servicing Asset at Fair Value, Amount [Roll Forward] |  |  |  |
Beginning balance | 73,725 | 76,314 | 74,249 | 76,617
Additions and amortization: |  |  |  |
Originations | 707 | 935 | 2,177 | 2,473
Purchases | 0 | 0 | 0 | 460
Amortization | (1,669) | (1,564) | (4,810) | (4,874)
Net additions and amortization | (962) | (629) | (2,633) | (1,941)
Changes in fair value of MSR assumptions | (1,963) | 785 | (816) | 1,794
Ending balance | $ 70,800 | $ 76,470 | $ 70,800 | $ 76,470

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