VARIABLE INTEREST ENTITIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) RSO (USD $)											12 Months Ended			12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2009	Sep. 30, 2009	Dec. 31, 2012 RSO [Member]	Dec. 31, 2011 RSO [Member]	Dec. 31, 2010 RSO [Member]	Dec. 31, 2012 RSO [Member] Building [Member] Minimum [Member]	Dec. 31, 2012 RSO [Member] Building [Member] Maximum [Member]	Dec. 31, 2012 RSO [Member] Site Improvements [Member]	Dec. 31, 2012 RSO [Member] Prime Brokerage Account [Member]	Dec. 31, 2011 RSO [Member] Prime Brokerage Account [Member]	Dec. 31, 2012 RSO [Member] Money Market Account [Member]	Dec. 31, 2011 RSO [Member] Money Market Account [Member]	Dec. 31, 2012 RSO [Member] Checking Accounts [Member]	Dec. 31, 2011 RSO [Member] Checking Accounts [Member]	Dec. 31, 2012 RSO [Member] Accounts at Investment Properties [Member]	Dec. 31, 2011 RSO [Member] Accounts at Investment Properties [Member]
Property, Plant and Equipment [Line Items]
Cash and cash equivalents	$ 19,393,000	$ 24,455,000	$ 28,553,000	$ 16,495,000	$ 14,530,000	$ 11,243,000	$ 9,164,000	$ 7,324,000	$ 8,409,000	$ 26,197,000	$ 85,278,000	$ 43,116,000	$ 29,488,000				$ 19,900,000	$ 4,800,000	$ 20,600,000	$ 26,000,000	$ 43,300,000	$ 12,000,000	$ 1,500,000	$ 299,000
Useful life														25 years	40 years
Useful life																Lesser of the remaining life of building or useful life
Impairment charge on loan investment												1,700,000
Impairment charges											$ 0