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FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Assets |  |
Individually evaluated loans | $ 8,324 | $ 8,746
Capitalized servicing rights | 5,263 | 3,605
Premises held for sale | 226 | 962
Total | 13,813 | $ 13,313
Total Gains (Losses) | 500 |
Impaired loans |  |
Assets |  |
Total Gains (Losses) | (422) |
Capitalized servicing rights |  |
Assets |  |
Total Gains (Losses) | 1,658 |
Assets held for sale |  |
Assets |  |
Total Gains (Losses) | $ (736) |

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