SEGMENT REPORTING - Narrative (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2015
USD ($)
Sep. 30, 2016
USD ($)
Segment
Sep. 30, 2015
USD ($)
Segment Reporting [Abstract]      
Number of segments | Segment   3  
Impact for all periods | $ $ 0 $ 0 $ 0