v3.19.3.a.u2
DERIVATIVES AND FAIR VALUE MEASUREMENTS Narrative (Details) - USD ($)
1 Months Ended 12 Months Ended
Apr. 30, 2018
Dec. 31, 2019
Dec. 31, 2018
Apr. 15, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Cash received from termination of interest rate swaps $ 8,000,000.0      
Interest rate swaps | Cash Flow Hedges        
Derivative Instruments, Gain (Loss) [Line Items]        
Interest rate swaps interest rate received   receive a rate based on the three-month USD LIBOR    
Notional amount of forward-starting interest rate swaps that terminate in September 2020   $ 250,000,000.0 $ 250,000,000  
Notional amount of forward-starting interest rate swaps terminated $ 350,000,000.0      
7.65% senior notes        
Derivative Instruments, Gain (Loss) [Line Items]        
Stated interest rate       7.65%