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EMPLOYEE BENEFIT PLANS, Noncontributory Defined Benefit Pension Plan Fair Value of Plan Assets (Details) - Pension Plan [Member] - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 18,212 | $ 19,992 | $ 15,786
Allocation | 100.00% | 100.00% |
Expected employer contribution to pension plan | $ 500 |  |
Expected future benefit payments [Abstract] |  |  |
2019 | 7,863 |  |
2020 | 1,238 |  |
2021 | 1,080 |  |
2022 | 531 |  |
2023 | 559 |  |
2024 - 2028 | 5,907 |  |
Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 15,062 | $ 15,935 |
Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 3,150 | 4,057 |
Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Cash and Cash Equivalents [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 5,057 | $ 3,827 |
Allocation | 27.80% | 19.10% |
Cash and Cash Equivalents [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 5,057 | $ 3,827 |
Cash and Cash Equivalents [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Cash and Cash Equivalents [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Equity Securities [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 4,815 | $ 6,018 |
Allocation | 26.80% | 30.10% |
Equity Securities [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 4,891 | $ 6,018 |
Equity Securities [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Equity Securities [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | 0 |
Equity Securities [Member] | Minimum [Member] |  |  |
Target Allocations of Assets [Abstract] |  |  |
Target plan asset allocations | 50.00% |  |
Equity Securities [Member] | Maximum [Member] |  |  |
Target Allocations of Assets [Abstract] |  |  |
Target plan asset allocations | 70.00% |  |
Mutual Funds and ETF's [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 5,114 | $ 6,090 |
Allocation | 28.10% | 30.50% |
Mutual Funds and ETF's [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 5,114 | $ 6,090 |
Mutual Funds and ETF's [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Mutual Funds and ETF's [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Corporate Bonds [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 3,150 | $ 3,469 |
Allocation | 17.30% | 17.40% |
Corporate Bonds [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Corporate Bonds [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 3,150 | 3,469 |
Corporate Bonds [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | 0 |
Corporate Bonds [Member] | Minimum [Member] |  |  |
Target Allocations of Assets [Abstract] |  |  |
Target plan asset allocations | 30.00% |  |
Corporate Bonds [Member] | Maximum [Member] |  |  |
Target Allocations of Assets [Abstract] |  |  |
Target plan asset allocations | 50.00% |  |
Municipal Bonds [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 105 |
Allocation | 0.00% | 0.50% |
Municipal Bonds [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 105 |
U.S. Agency Securities [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 483 |
Allocation | 0.00% | 2.40% |
U.S. Agency Securities [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
U.S. Agency Securities [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 483 |
U.S. Agency Securities [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Certificates of Deposit [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Allocation | 0.00% | 0.00% |
Certificates of Deposit [Member] | Level I [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 0 | $ 0 |
Certificates of Deposit [Member] | Level II [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Certificates of Deposit [Member] | Level III [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | 0 | 0 |
Common Stock [Member] |  |  |
Plan assets at fair value [Abstract] |  |  |
Fair value of plan assets | $ 610 | $ 684 |
Allocation | 3.40% | 3.40% |

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