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FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - Non-recurring - Level 3 - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Dec. 31, 2020
Assets |  |
Individually evaluated loans | $ 10,556 | $ 8,746
Capitalized servicing rights | 4,693 | 3,605
Premises held for sale | 971 | 962
Total | 16,220 | 13,313
Total Gains (Losses) | (2,907) |
Impaired loans |  |
Assets |  |
Total Gains (Losses) | (1,810) |
Capitalized servicing rights |  |
Assets |  |
Total Gains (Losses) | (1,088) |
Assets held for sale |  |
Assets |  |
Premises held for sale | 971 | $ 962
Total Gains (Losses) | $ (9) |

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