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EMPLOYEE BENEFIT PLANS - Schedule of Net Benefit Costs (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Pension Plans    
Defined Benefit Plan Disclosure [Line Items]    
Service cost $ 0  
Interest cost 334  
Expected return on plan assets (706)  
Settlement Charge 13  
Net periodic pension benefit (359)  
Non-qualified Supplemental Executive Retirement Plan    
Defined Benefit Plan Disclosure [Line Items]    
Service cost 0 $ 72
Interest cost 116 128
Expected return on plan assets 0 0
Amortization of unrecognized actuarial loss 21 28
Net periodic pension benefit $ 137 $ 228