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EMPLOYEE BENEFIT PLANS - Schedule of Defined Benefit Plan Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Defined Benefit Plan Disclosure [Line Items]      
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax $ 216 $ 328 $ (90)
Amortization of actuarial loss 333 0  
Pension Plans      
Defined Benefit Plan Disclosure [Line Items]      
Settlement charge 0 (13)  
Total accumulated other comprehensive loss (pre-tax) 748 333  
Non-qualified Supplemental Executive Retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax 414 585  
Actuarial loss (gain) (585) (590)  
Amortization of actuarial loss $ (142) $ 16