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INCOME TAXES - NOL carry forwards (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Federal    
Operating Loss Carryforwards [Line Items]    
NOL carryforwards $ 199.8 $ 171.2
State    
Operating Loss Carryforwards [Line Items]    
NOL carryforwards $ 200.5 $ 171.0