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INCOME TAXES (Uncertain Tax Positions) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Income taxes      
Reserve for uncertain tax positions $ 0.9 $ 1.0  
Maximum      
Income taxes      
Reserve for uncertain tax positions     $ 0.1
Foreign and State Jurisdictions | Maximum      
Income taxes      
Interest paid on income tax obligations 0.1 0.1 0.1
Foreign | Maximum      
Income taxes      
Income tax accrued interest $ 0.1    
Federal      
Income taxes      
Decrease in reserve, Expiration of statute of limitations     0.7
Increase in reserve, Prior period tax positions   0.9  
Federal | Maximum      
Income taxes      
Reserve for uncertain tax positions   $ 0.1 $ 0.1