VARIABLE INTEREST ENTITIES FAIR VALUE OF FINANCIAL INSTRUMENTS (RAI Other VIEs - VIEs not consolidated) (Details) (USD $) In Thousands, unless otherwise specified	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	$ 34,418	$ 52,117
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	2,642
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
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
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
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	231
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
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
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
Investments [Member]
Carrying amounts of assets of nonconsolidated VIEs and maximum exposure to loss associated with these VIEs [Abstract]
Investments	2,411
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
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