FINANCING RECEIVABLES (Impaired Financing Receivables) (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Financing Receivables Without a Specific Valuation Allowance [Member]
Impaired financing receivables [Abstract]
Impaired financing receivables without a specific allowance	$ 0	$ 0
Receivables from Managed Entities - Commercial Finance [Member] | Financing receivables with a specific valuation allowance [Member]
Impaired financing receivables [Abstract]
Net Balance	5,744,000	8,633,000
Unpaid Balance	38,193,000	38,219,000
Specific Allowance	32,449,000	29,586,000
Average Investment in Impaired Assets	38,129,000	38,110,000
Receivables from Managed Entities - Real Estate [Member]
Impaired financing receivables [Abstract]
Specific Allowance		2,500,000
Receivables from Managed Entities - Real Estate [Member] | Financing receivables with a specific valuation allowance [Member]
Impaired financing receivables [Abstract]
Net Balance		2,291,000
Unpaid Balance		4,808,000
Specific Allowance		2,517,000
Average Investment in Impaired Assets		4,630,000
Financial Fund Management Entities [Member]
Impaired financing receivables [Abstract]
Specific Allowance		457,000
Financial Fund Management Entities [Member] | Financing receivables with a specific valuation allowance [Member]
Impaired financing receivables [Abstract]
Net Balance	848,000	848,000
Unpaid Balance	1,305,000	1,305,000
Specific Allowance	457,000	457,000
Average Investment in Impaired Assets	1,305,000	1,305,000
Rent Receivables - Real Estate [Member] | Financing receivables with a specific valuation allowance [Member]
Impaired financing receivables [Abstract]
Net Balance	0	0
Unpaid Balance	54,000	68,000
Specific Allowance	54,000	68,000
Average Investment in Impaired Assets	$ 45,000	$ 40,000