CERTAIN RELATIONSHIPS AND RELATED PARTY TRANSACTIONS (Fees From Unconsolidated Investment Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Commercial Finance, Four Investment Entities [Member]
Related Party Transaction [Line Items]
Amount waived of the fund management fees from commercial finance investment entities	$ 224	$ 618
Real estate [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	8,925	4,194
Discounts recorded	33	133
Financial fund management [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	802	748
Commercial Finance [Member]
Related Party Transaction [Line Items]
Fees from unconsolidated investment entities	0	0
CVC Credit Partners, L.P. [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	181	377
RRE Opportunity REIT I [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	351	204
Dividends paid	29	33
RRE Opportunity REIT II [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	502	0
LEAF [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	36	57
Payment for sub-servicing the commercial finance investment partnerships	(127)	(199)
Payment for rent and related costs	0	(303)
1845 Walnut Associates Ltd. [Member]
Related Party Transaction [Line Items]
Payment for rent and operating expenses	(204)	(157)
Property management fees	16	42
Brandywine Construction & Management, Inc. [Member]
Related Party Transaction [Line Items]
Payment for property management of hotel property	(40)	(43)
Atlas Energy, L.P. [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	30	141
Ledgewood P.C. [Member]
Related Party Transaction [Line Items]
Payment for legal services	(24)	(61)
Graphic Images, LLC [Member]
Related Party Transaction [Line Items]
Payment for printing services	(60)	(24)
The Bancorp, Inc. [Member]
Related Party Transaction [Line Items]
Reimbursement of related party costs	27	28
9 Henmar LLC [Member]
Related Party Transaction [Line Items]
Payment of broker/consulting fees	$ (3)	$ (3)