VARIABLE INTEREST ENTITIES (Schedule of Carrying Amount of Assets Related to VIEs) (Details) RSO (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Sep. 30, 2012
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	$ 30,618	$ 34,418
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	2,941
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	1,792
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	237
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	912
Receivables from Managed Entities and Related Parties [Member] | Variable Interest Entity, Not Primary Beneficiary [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	237
Receivables from Managed Entities and Related Parties [Member] | 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]
Receivables from managed entities and related parties, net	0
Receivables from Managed Entities and Related Parties [Member] | 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]
Receivables from managed entities and related parties, net	237
Receivables from Managed Entities and Related Parties [Member] | 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]
Receivables from managed entities and related parties, net	0
Investments [Member] | Variable Interest Entity, Not Primary Beneficiary [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	2,704
Investments [Member] | 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]
Investments	1,792
Investments [Member] | 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]
Investments	0
Investments [Member] | 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]
Investments	$ 912