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RESTRUCTURING AND OTHER RELATED CHARGES Rollforward of Liability (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Restructuring Reserve [Roll Forward]        
Charges $ 280 $ 2,860 $ 2,157 $ 3,046
Operating Group Reorganization Program        
Restructuring Reserve [Roll Forward]        
Charges 280 $ 0 2,157 $ 0
Employee Severance | Operating Group Reorganization Program        
Restructuring Reserve [Roll Forward]        
Balance, beginning of period     0  
Charges     2,157  
Payments     (1,032)  
Balance, end of period $ 1,125   $ 1,125