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RELATED PARTY TRANSACTIONS (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Related Party Transaction [Line Items]              
Related Party Transaction, Revenues from Transactions with Related Party   $ 300   $ 300 $ 900 $ 1,000  
Related Party Transaction, Due from (to) Related Party   200     200   $ 200
Related Party Transaction, Expenses from Transactions with Related Party   $ 400   $ 400 $ 1,100 1,400  
Equity Method Investment, Ownership Percentage 64.30% 21.40%     21.40%    
Payment of interest on redeemable noncontrolling interest     $ (16,000)        
Payment related to redeemable noncontrolling interest agreement $ 30,700 $ 71,722 $ 16,000   $ 71,722 $ 0  
Noncontrolling Interest, Ownership Percentage by Parent 64.30%            
RDIF [Member]              
Related Party Transaction [Line Items]              
Equity Method Investment, Ownership Percentage 35.70%            
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners 35.70%