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LEASES (Narrative) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2018
Sep. 30, 2019
Sep. 30, 2018
Dec. 31, 2018
Leases [Abstract]          
Operating lease expense $ 7,000   $ 18,000    
Lessee, Lease, Description [Line Items]          
Operating lease liabilities $ 115,887   $ 115,887   $ 0
Lease expense   $ 7,000   $ 22,000  
Alpharetta, Georgia          
Lessee, Lease, Description [Line Items]          
Term of contract 15 years   15 years    
Operating lease liabilities $ 40,000   $ 40,000