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EMPLOYEE BENEFIT PLANS - Schedule of Allocation of Plan Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | ---
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets |  | $ 11,026 | $ 10,622
Pension Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | $ 573 |  |
Plan assets | 9,990 | 11,026 |
Pension Plans | Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 9,990 | 11,025 |
Pension Plans | Recurring | Large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 1,730 | 2,143 |
Pension Plans | Recurring | Mid-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 477 | 612 |
Pension Plans | Recurring | Small-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 469 | 613 |
Pension Plans | Recurring | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 845 | 1,150 |
Pension Plans | Recurring | Fixed-income - core plus |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 3,945 | 3,896 |
Pension Plans | Recurring | Intermediate duration |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 1,321 | 1,316 |
Pension Plans | Recurring | Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 506 | 610 |
Pension Plans | Recurring | Common/collective trusts - large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 469 | 555 |
Pension Plans | Recurring | Cash equivalents - money market |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 228 | 130 |
Pension Plans | Level 1 | Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 9,521 | 10,470 |
Pension Plans | Level 1 | Recurring | Large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 1,730 | 2,143 |
Pension Plans | Level 1 | Recurring | Mid-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 477 | 612 |
Pension Plans | Level 1 | Recurring | Small-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 469 | 613 |
Pension Plans | Level 1 | Recurring | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 845 | 1,150 |
Pension Plans | Level 1 | Recurring | Fixed-income - core plus |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 3,945 | 3,896 |
Pension Plans | Level 1 | Recurring | Intermediate duration |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 1,321 | 1,316 |
Pension Plans | Level 1 | Recurring | Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 506 | 610 |
Pension Plans | Level 1 | Recurring | Common/collective trusts - large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 1 | Recurring | Cash equivalents - money market |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 228 | 130 |
Pension Plans | Level 2 | Recurring |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 469 | 555 |
Pension Plans | Level 2 | Recurring | Large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Mid-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Small-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Fixed-income - core plus |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Intermediate duration |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Common stock |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Pension Plans | Level 2 | Recurring | Common/collective trusts - large-cap |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 469 | 555 |
Pension Plans | Level 2 | Recurring | Cash equivalents - money market |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Plan assets | 0 | 0 |
Non-qualified Supplemental Executive Retirement Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
After tax components of accumulated other comprehensive loss, not yet recognized in net periodic pension cost | 317 |  |
Plan assets | $ 0 | $ 0 | $ 0

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