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REDEEMABLE NON-CONTROLLING INTERESTS (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2016
Dec. 31, 2015
REDEEMABLE NON-CONTROLLING INTERESTS [Abstract]    
Beginning balance $ 8,843  
Operating results allocated to redeemable non-controlling interest partners 140  
Distributions to redeemable non-controlling interest partners (130)  
Payments for purchase of redeemable non-controlling interests (1,262)  
Ending balance 7,591 $ 8,843
Redeemable Noncontrolling Interest [Line Items]    
Purchase price for additional non controlling interest 400 $ 8,700
January 2018 [Member]    
Redeemable Noncontrolling Interest [Line Items]    
Purchase price for additional non controlling interest in cash 1,200  
Purchase price for additional non controlling interest $ 100