Real Estate Properties (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2012	Dec. 31, 2012 Shopping centers/Retail	Dec. 31, 2012 Coop condo Apts	Dec. 31, 2012 Commercial / mixed use Primary beneficiary RBH-TRB Newark Holdings LLC	Dec. 31, 2012 Multi Family	Dec. 31, 2012 Land	Sep. 30, 2012 Land
Movement in real estate properties owned
Balance at the beginning of the period	$ 190,317	$ 2,749	$ 250	$ 61,808	$ 117,538	$ 7,972	$ 7,972
Additions	57,400				57,400
Costs Capitalized and Improvements	8,995			7,997	998
Depreciation, Amortization and other Reductions	(1,290)	(26)	(7)	(153)	(1,104)
Balance at the end of the period	$ 255,422	$ 2,723	$ 243	$ 69,652	$ 174,832	$ 7,972	$ 7,972