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FAIR VALUE MEASUREMENTS (Narrative) (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($) item | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Fair Value Disclosures [Abstract] |  |  |
Minimum number of market participants | item | 4,000 |  |
Level 3 Fair value measurements weighted average related to impaired loans | 5.90% | 5.30% |
Level 3 fair value measurements weighted average related to foreclosed property | 4.50% | 3.70% |
Level 3 fair value measurements weighted average related to former bank premises | 0.00% | 0.00% |
Total valuation expenses related to foreclosed properties | $ 921,000 | $ 1,300,000 | $ 1,600,000
Total Valuation expenses related to former bank premises | 985,000 | $ 0 | $ 339,000
Loans held for sale, at fair value | $ 55,405,000 |  |

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