CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Fees From Unconsolidated Investment Entities) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Related Party Transaction [Line Items]
Dividends paid	$ 300	$ 458
Commercial Finance, Four Investment Entities
Related Party Transaction [Line Items]
Amount waived of the fund management fees from commercial finance investment entities	7	49
Real estate investment entities
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities:	3,156	2,187
Discounts recorded	6	(207)
Financial fund management partnerships
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities:	774	782
RSO
Related Party Transaction [Line Items]
Management, incentive and servicing fees	3,745	3,232
Reimbursement of related party costs	1,037	1,071
Dividends paid	300	458
CVC Credit Partners, L.P.
Related Party Transaction [Line Items]
Reimbursement of related party costs	219	229
Resource Real Estate Opportunity REIT Inc
Related Party Transaction [Line Items]
Reimbursement of related party costs	1,275	888
Dividends paid	44	15
Graphic Images, LLC: payment for printing services	(4,617)	(6,305)
RRE Opportunity REIT II
Related Party Transaction [Line Items]
Reimbursement of related party costs	578	737
Dividends paid	20	7
Graphic Images, LLC: payment for printing services	(4,790)	(1,012)
Innovation Office REIT
Related Party Transaction [Line Items]
Reimbursement of related party costs	621	0
Apartment REIT III
Related Party Transaction [Line Items]
Reimbursement of related party costs	261	0
LEAF
Related Party Transaction [Line Items]
Reimbursement of related party costs	36	36
Payment for sub-servicing the commercial finance investment partnerships	(12)	(23)
1845 Walnut Associates Ltd.
Related Party Transaction [Line Items]
Payment for rent and related expenses	(214)	(207)
Property management fees	47	38
Brandywine Construction & Management, Inc.
Related Party Transaction [Line Items]
Brandywine Construction & Management, Inc.: payment for property management of hotel property	(52)	(52)
Atlas Energy, L.P.
Related Party Transaction [Line Items]
Reimbursement of related party costs	29	13
Ledgewood P.C.
Related Party Transaction [Line Items]
Ledgewood P.C.: payment for legal services	(35)	(34)
Graphic Images, LLC
Related Party Transaction [Line Items]
Graphic Images, LLC: payment for printing services	(26)	(48)
9 Henmar LLC
Related Party Transaction [Line Items]
9 Henmar LLC: payment of broker/consulting fees	$ (3)	$ (3)

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Payment to related party for services provided.

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Incentive investment management fees paid to affiliated companies, pursuant to management agreements.

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Represent the amount paid for rent and operating expenses.

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Payment to related party for payment of legal services provided.

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Amount of dividend income on nonoperating securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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The aggregate costs related to management of owned properties during the reporting period.

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-Name Accounting Standards Codification
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The amount of revenue derived from managing real estate properties.

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