CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Fees From Unconsolidated Investment Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Commercial Finance, Four Investment Entities [Member]
Related Party Transaction [Line Items]
Amount waived of the fund management fees from commercial finance investment entities	$ 483	$ 1,100	$ 1,100	$ 2,300
Real Estate Investment Entities [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	5,353	4,405	9,547	9,094
Discounts recorded	37	57	113	109
Financial Fund Management Investment Entities [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	786	765	1,534	1,618
Commercial Finance Investment Entities [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	0	0	0	0
CVC Credit Partners, L.P. [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	307	1,352	684	1,352
Resource Real Estate Opportunity REIT Inc [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	197	150	401	680
Dividends paid	24	14	57	14
LEAF [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	58	84	115	166
Payment for sub-servicing the commercial finance investment partnerships	(243)	(585)	(546)	(1,291)
Payment for rent and related expenses	(200)	(193)	(399)	(377)
1845 Walnut Associates Ltd. [Member]
Related Party Transaction [Line Items]
1845 Walnut Associates Ltd. – payment of rent and operating expenses	(33)	(155)	(190)	(363)
Property Management Fee Revenue	75	0	117	0
Brandywine Construction & Management, Inc. (BCMI) [Member]
Related Party Transaction [Line Items]
Payments for Property Management	(70)	(69)	(113)	(108)
Atlas Energy, L.P. [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	53	160	194	309
Ledgewood P.C. [Member]
Related Party Transaction [Line Items]
Ledgewood P.C. – payment for legal services	(43)	(239)	(104)	(353)
Graphic Images, LLC [Member]
Related Party Transaction [Line Items]
Graphic Images, LLC – payment for printing services	(15)	(34)	(39)	(128)
The Bancorp, Inc. [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	28	32	56	61
9 Henmar LLC [Member]
Related Party Transaction [Line Items]
9 Henmar, LLC – payment of broker/consulting fees	$ (17)	$ (20)	$ (20)	$ (24)