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EMPLOYEE BENEFIT PLANS - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]    
Total recognized in net periodic benefit cost (credit) and other comprehensive loss (income) $ 24 $ (26)
Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 315 334
Expected return on plan assets (706) (706)
Net actuarial loss (gain) 415 346
Settlement Charge 0 13
Settlement charge 0 (13)
Net periodic pension benefit cost (credit) (391) (359)
Non-qualified Supplemental Executive Retirement Plan    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 102 116
Expected return on plan assets 0 0
Amortization of unrecognized actuarial loss 29 21
Net actuarial loss (gain) (29) (21)
Net periodic pension benefit cost (credit) 131 137
Total recognized in net periodic benefit cost (credit) and other comprehensive loss (income) $ (171) $ (5)