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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating lease liabilities $ 115,887 $ 115,887   $ 0
Operating lease right-of-use assets 116,560 116,560   $ 0
Short-term lease expense $ 196 $ 961    
ASU 2016-02, Leases (Topic 842)        
New Accounting Pronouncements or Change in Accounting Principle [Line Items]        
Operating lease liabilities     $ 144,000  
Operating lease right-of-use assets     $ 144,000