CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Fees From Unconsolidated Investment Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 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	$ 410	$ 883	$ 1,500	$ 3,200
Real Estate Investment Entities [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	6,726	4,439	16,273	13,533
Discounts recorded	56	31	169	140
Financial Fund Management Investment Entities [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	801	715	2,335	2,333
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	295	514	979	1,866
Resource Real Estate Opportunity REIT Inc [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	204	89	605	769
Dividends paid	28	0	85	14
LEAF [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	53	62	168	228
Payment for sub-servicing the commercial finance investment partnerships	(197)	(476)	(743)	(1,767)
Payment for rent and related expenses	(144)	(189)	(543)	(566)
1845 Walnut Associates Ltd. [Member]
Related Party Transaction [Line Items]
1845 Walnut Associates Ltd. – payment of rent and operating expenses	(286)	(168)	(476)	(531)
Property Management Fee Revenue	32	0	149	0
Brandywine Construction & Management, Inc. (BCMI) [Member]
Related Party Transaction [Line Items]
Payments for Property Management	(54)	(49)	(167)	(157)
Atlas Energy, L.P. [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	49	156	243	465
Ledgewood P.C. [Member]
Related Party Transaction [Line Items]
Ledgewood P.C. – payment for legal services	(76)	(56)	(180)	(409)
Graphic Images, LLC [Member]
Related Party Transaction [Line Items]
Graphic Images, LLC – payment for printing services	(20)	(80)	(59)	(208)
The Bancorp, Inc. [Member]
Related Party Transaction [Line Items]
Reimbursement of costs and expenses	29	29	85	90
9 Henmar LLC [Member]
Related Party Transaction [Line Items]
9 Henmar, LLC – payment of broker/consulting fees	$ (4)	$ (4)	$ (24)	$ (28)