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EMPLOYEE BENEFIT PLANS - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Retirement Benefits [Abstract]          
Defined Benefit Plan, Expected Future Employer Contributions, Remainder of Fiscal Year $ 0   $ 0    
Payment for Pension Benefits     0   $ 0
Pension Cost (Reversal of Cost) $ 261,000 $ 339,000 $ 781,000 $ 521,000