REDEEMABLE NON-CONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2018	Jun. 30, 2018
Changes in Carrying Amount of Redeemable Non-Controlling Interests [Roll Forward]
Beginning balance		$ 102,572
Ending balance	$ 117,027	117,027
Carrying Amount (Fair Value) of Redeemable Non-Controlling Interest [Abstract]
Fair value	117,027	102,572	$ 117,027
Redeemable Non-Controlling Interest [Member]
Changes in Carrying Amount of Redeemable Non-Controlling Interests [Roll Forward]
Beginning balance	108,085	102,572
Operating results allocated to redeemable non-controlling interest partners	2,610	4,346
Distributions to redeemable non-controlling interest partners	(2,720)	(4,079)
Changes in the fair value of redeemable non-controlling interest	4,344	9,425
Purchase of new business	4,863	4,863
Other	(155)	(100)
Ending balance	117,027	117,027
Carrying Amount (Fair Value) of Redeemable Non-Controlling Interest [Abstract]
Contractual time period has lapsed but holder's employment has not been terminated			34,144
Contractual time period has not lapsed and holder's employment has not been terminated			82,883
Fair value	$ 108,085	$ 102,572	$ 117,027

Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.19)
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Amount after tax of income (loss) attributable to other redeemable noncontrolling equity holder.

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Amount of increase in noncontrolling interest from sale of a portion of the parent's controlling interest.

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Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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Refers to amount of contractual time period had not lapsed and holder's employment had not been terminated as of balance sheet date.

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Refers to amount of contractual time period had lapsed but holder's employment had not been terminated as of balance sheet date.

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The distributions during the period for redemption of mandatorily redeemable noncontrolling interests.

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