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OTHER COMPREHENSIVE INCOME (LOSS) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Components of accumulated other comprehensive loss, net of tax [Abstract] |  |  |  |
Net unrealized gain on securities available for sale |  | $ 7,668 | $ 2,899 |
Tax effect |  | (1,610) | (609) |
Net -of-tax amount |  | 6,058 | 2,290 |
Unrealized loss on interest rate swap [Abstract] |  |  |  |
Unrealized loss on interest rate swap |  | (11) | 0 |
Tax effect |  | 2 | 0 |
Net -of-tax amount |  | (9) | 0 |
Unrecognized pension costs [Abstract] |  |  |  |
Unrecognized pension costs |  | (4,383) | (3,695) |
Tax effect |  | 921 | 776 |
Net -of-tax amount |  | (3,462) | (2,919) |
Total accumulated other comprehensive income (loss) |  | 2,587 | (629) |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance |  | 154,774 | 139,229 | $ 129,011
Other comprehensive income (loss) before reclassifications (net of tax) |  | 3,272 | 3,097 | (686)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) |  | (56) | 195 | 162
Other comprehensive income (loss) |  | 3,216 | 3,292 | (524)
Balance |  | 194,259 | 154,774 | 139,229
Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance |  | (629) | (3,921) | (3,398)
Other comprehensive income (loss) |  | 3,216 | 3,292 | (524)
Balance |  | 2,587 | (629) | (3,921)
Unrealized Gain (Loss) on Available For Sale Securities [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance | [1] | 2,290 | (973) | (269)
Other comprehensive income (loss) before reclassifications (net of tax) | [1] | 4,008 | 3,283 | (720)
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) | [1] | (240) | (20) | 15
Other comprehensive income (loss) | [1] | 3,768 | 3,263 | (705)
Balance | [1] | 6,058 | 2,290 | (973)
Unrealized Gain (Loss) on Interest Rate Swap [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance | [1] | 0 | 0 | 0
Other comprehensive income (loss) before reclassifications (net of tax) | [1] | (9) | 0 | 0
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) | [1] | 0 | 0 | 0
Other comprehensive income (loss) | [1] | (9) | 0 | 0
Balance | [1] | (9) | 0 | 0
Defined Benefit Pension Items [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance | [1] | (2,919) | (2,948) | (3,129)
Other comprehensive income (loss) before reclassifications (net of tax) | [1] | (727) | (186) | 34
Amounts reclassified from accumulated other comprehensive income (loss) (net of tax) | [1] | 184 | 215 | 147
Other comprehensive income (loss) | [1] | (543) | 29 | 181
Balance | [1] | $ (3,462) | $ (2,919) | (2,948)
Cumulative Effect, Period of Adoption, Adjustment [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance |  |  |  | 0
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accumulated Other Comprehensive Income (Loss) [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance |  |  |  | 1
Cumulative Effect, Period of Adoption, Adjustment [Member] | Unrealized Gain (Loss) on Available For Sale Securities [Member] |  |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |  |
Balance | [1] |  |  | $ 1
[1] | Amounts in parentheses indicate debits

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