REDEEMABLE NON-CONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Redeemable Noncontrolling Interest [Line Items]
Beginning balance	$ 0
Operating results allocated to redeemable non-controlling interest partners	4,366	$ 3,146
Distributions to redeemable non-controlling interest partners	(5,136)	(3,955)
Purchases of businesses - initial equity related to redeemable non-controlling interest	10,282	$ 11,191
Ending balance	12,079
Redeemable Non-Controlling Interest [Member]
Redeemable Noncontrolling Interest [Line Items]
Beginning balance	0
Operating results allocated to redeemable non-controlling interest partners	155
Distributions to redeemable non-controlling interest partners	(16)
Purchases of businesses - initial equity related to redeemable non-controlling interest	11,940
Ending balance	$ 12,079