VARIABLE INTEREST ENTITIES (Schedule of Carrying Amount of Assets Related to VIEs) (Details) (USD $)	Sep. 30, 2012		Sep. 30, 2011
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	$ 41,051,000		$ 54,815,000
Variable Interest Entity, Not Primary Beneficiary [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Maximum Exposure to Loss in Non-consolidated VIEs	24,080,000
Variable Interest Entity, Not Primary Beneficiary [Member] | RSO [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Maximum Exposure to Loss in Non-consolidated VIEs	21,438,000
Variable Interest Entity, Not Primary Beneficiary [Member] | RRE Opportunity REIT [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Maximum Exposure to Loss in Non-consolidated VIEs	1,444,000
Variable Interest Entity, Not Primary Beneficiary [Member] | Ischus Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Maximum Exposure to Loss in Non-consolidated VIEs	231,000
Variable Interest Entity, Not Primary Beneficiary [Member] | Trapeza Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Maximum Exposure to Loss in Non-consolidated VIEs	967,000
Receivables from Managed Entities and Related Parties [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	6,167,000	[1]
Receivables from Managed Entities and Related Parties [Member] | RSO [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	5,936,000	[1]
Receivables from Managed Entities and Related Parties [Member] | RRE Opportunity REIT [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	0	[1]
Receivables from Managed Entities and Related Parties [Member] | Ischus Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	231,000	[1]
Receivables from Managed Entities and Related Parties [Member] | Trapeza Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Receivables from managed entities and related parties, net	0	[1]
Investments [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	17,913,000
Investments [Member] | RSO [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	15,502,000
Investments [Member] | RRE Opportunity REIT [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	1,444,000
Investments [Member] | Ischus Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	0
Investments [Member] | Trapeza Entities [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	$ 967,000

[1] Exclusive of expense reimbursements due to the Company.