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EMPLOYEE BENEFIT PLANS - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items]    
Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss $ (162) $ 24
Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 331 315
Expected return on plan assets 638 706
Settlement Charge 0 0
Net actuarial loss 145 415
Settlement charge 0 0
Net periodic pension benefit cost (credit) (307) (391)
Non-qualified Supplemental Executive Retirement Plan    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 103 102
Expected return on plan assets 0 0
Net actuarial loss 220 (142)
Amortization of unrecognized actuarial loss (15) (29)
Net periodic pension benefit cost (credit) 118 131
Total recognized in net periodic benefit (credit) cost and other comprehensive (income) loss $ 205 $ (171)