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RETIREMENT PLANS - Additional Information (Details) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2019
Aug. 31, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Overall termination charge, pre-tax     $ 0 $ 0 $ 7,019 $ 0
Pension Plan | U.S. | Qualified Plan            
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]            
Lump sum payments offered to eligible active and terminated vested participants, percent of liability         42.00%  
Percent of participants that accepted lump sum payment offer         74.00%  
Aggregate amount of lump sum payments   $ 17,000        
Additional contribution required due to termination $ 500          
Overall termination charge, pre-tax 7,000          
Overall termination charge, net of tax $ 5,400