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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2020
Sep. 30, 2021
Sep. 30, 2021
One-time Termination Benefits      
Loss Contingencies [Line Items]      
Estimate of restructuring costs, once probable   $ 1.1 $ 1.1
Restructuring charges   $ 0.4 $ 0.4
Fortis      
Loss Contingencies [Line Items]      
Loss contingency, damages sought $ 30.0