DISCONTINUED OPERATIONS (Cash Flows of Discontinued Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation and amortization	$ (891)	$ 2,173
Non-cash investing and financing activities:
Decrease in debt	6,712	0
Decrease in noncontrolling interests	83,909	0
Discontinued Operations, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Depreciation and amortization	29	1,290
Capital expenditures		$ (123)
Non-cash investing and financing activities:
Decrease in loans	(231)
Decrease in other assets	(35,724)
Decrease in debt	8,308
Decrease in accounts payable and accrued expenses	7,201
Decrease in other liabilities	18,333
Increase in accumulated other comprehensive income	(3,404)
Consolidated Funds and Ventures | Discontinued Operations, 2018
Non-cash investing and financing activities:
Decrease in investments in debt securities	(5,450)
Decrease in other assets	24,140
Decrease in debt	6,144
Decrease in other liabilities	480
Decrease in noncontrolling interests	$ 5,620