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FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Assets |  |
Other real estate owned | $ 216 | $ 122
Non-recurring | Level 3 |  |
Assets |  |
Total | 20,038 | 15,073
Total Gains (Losses) | (4,334) |
Non-recurring | Level 3 | Impaired loans |  |
Assets |  |
Impaired loans | 15,127 | 10,793
Total Gains (Losses) | (4,334) |
Non-recurring | Level 3 | Capitalized servicing rights |  |
Assets |  |
Capitalized servicing rights | 4,695 | 4,158
Total Gains (Losses) |  |
Non-recurring | Level 3 | Other real estate owned |  |
Assets |  |
Other real estate owned | 216 | $ 122
Total Gains (Losses) |  |

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