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LEGAL AND OTHER PROCEEDINGS (Details) - USD ($)
3 Months Ended 9 Months Ended
Feb. 27, 2018
Sep. 30, 2018
Sep. 30, 2019
Mar. 31, 2017
Loss Contingencies [Line Items]        
Additions to other significant pending legal or other proceedings     $ 0  
Universitas Education, LLC | Settled Litigation        
Loss Contingencies [Line Items]        
Loss related to litigation settlement $ 12,000,000.0      
Proceeds from arbitration settlement and legal costs   $ 7,900,000    
NHT | Pending Litigation        
Loss Contingencies [Line Items]        
Face amount       $ 6,300,000