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EMPLOYEE BENEFIT PLANS - Change in Plan Assets and Benefit Obligations Recognized (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of actuarial (loss)	$ (117)	$ (84)
Actuarial (gain) loss	(25)	225
Settlement charge	(70)	0
Total recognized in accumulated other comprehensive income	(212)	141
Total recognized in net periodic pension cost recognized and other comprehensive income	(168)	147
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of prior service credit	(83)	(83)
Actuarial (gain) loss	374	(191)
Total recognized in accumulated other comprehensive income	291	(274)
Accrued post-retirement liability recognized	$ 4,039	$ 3,422

X

- Definition

Represents the entire liability recognized in the balance sheet that is associated with the defined benefit plans including amount recognized in accumulated other comprehensive income.

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Represents the amounts recognized in net periodic benefit cost and other comprehensive income (loss).

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Amount, after tax, of gain (loss) for (increase) decrease in value of benefit obligation for change in actuarial assumptions and increase (decrease) in value of plan assets from experience different from that assumed of defined benefit plan, that has not been recognized in net periodic benefit (cost) credit.

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Amount, after tax, of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) of defined benefit plan.

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