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FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Assets |  |
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] | Noninterest Income | Noninterest Income
Non-recurring | Level 3 |  |
Assets |  |
Individually evaluated loans | $ 3,500 | $ 16,477
Capitalized servicing rights | 6,764 | 6,845
Premises held for sale | 1,154 | 252
Total | 11,418 | $ 23,574
Total Gains (Losses) | (12,156) |
Non-recurring | Level 3 | Impaired loans |  |
Assets |  |
Total Gains (Losses) | (12,977) |
Non-recurring | Level 3 | Capitalized servicing rights |  |
Assets |  |
Total Gains (Losses) | (81) |
Non-recurring | Level 3 | Assets held for sale |  |
Assets |  |
Total Gains (Losses) | $ 902 |

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