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EMPLOYEE BENEFIT PLANS - Additional Information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Mar. 31, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
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) $ 779,000   $ 261,000 $ 1,705,000 $ 781,000