Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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

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The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

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CONSOLIDATION (Variable Interest Entities) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	$ 8,019,437		$ 8,019,437		$ 5,829,712
Liabilities of consolidated VIEs	6,641,516		6,641,516		4,452,450
Consolidated Funds
Variable Interest Entity [Line Items]
Net income (loss) attributable to non-controlling interests related to consolidated VIEs	18,195	$ 7,861	25,403	$ (3,064)
Non-Consolidated Variable Interest Entities
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the Company's investment in VIEs	364,860		364,860		268,950
Consolidated VIEs
Variable Interest Entity [Line Items]
Maximum exposure to loss attributable to the Company's investment in VIEs	162,295		162,295		153,746
Consolidated VIEs \| Consolidated Funds
Variable Interest Entity [Line Items]
Assets of consolidated VIEs	5,760,754		5,760,754		3,822,010
Liabilities of consolidated VIEs	$ 5,152,179		$ 5,152,179		$ 3,360,329