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LEASES - Operating and Financing Lease Cost (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Jan. 01, 2019
Lessee, Lease, Description [Line Items]      
Operating lease costs $ 0.1 $ 0.1  
Finance leases, amortization expense and interest 0.1 0.1  
Minimum      
Lessee, Lease, Description [Line Items]      
Renewal term     1 year
Maximum      
Lessee, Lease, Description [Line Items]      
Short-term lease costs 0.1 0.1  
Amounts included in measurement of lease liabilities $ 0.1 $ 0.1  
Renewal term     5 years