DEBT OBLIGATIONS (Details 2) (USD $)									1 Months Ended																					12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 Mortgages Payable	Sep. 30, 2011 Mortgages Payable	Sep. 30, 2012 Mortgages Payable 69 Market St Newark, NJ	Sep. 30, 2011 Mortgages Payable 69 Market St Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in April 2022 Yonkers, NY	Sep. 30, 2011 Mortgages payable maturing in April 2022 Yonkers, NY	Mar. 31, 2012 Mortgages payable maturing in April 2022 Yonkers, NY Refinancing of an existing mortgage Consolidated joint venture	Mar. 29, 2012 Mortgages payable maturing in April 2022 Yonkers, NY Refinancing of an existing mortgage Consolidated joint venture	Sep. 30, 2012 Mortgages payable maturing in April 2019 Palm Beach Gardens, FL	Sep. 30, 2012 Mortgages payable maturing in April 2019 Melbourne, FL	Sep. 30, 2012 Mortgages payable maturing in February 2015 Marietta, GA	Sep. 30, 2012 Mortgages payable maturing in March 2022 Lawrenceville, GA	Sep. 30, 2012 Mortgages payable maturing in July 2022 Collierville, TN	Sep. 30, 2012 Mortgages payable maturing in January 2015 65 Market St - Newark, NJ	Sep. 30, 2011 Mortgages payable maturing in January 2015 65 Market St - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in August 2030 909 Broad St - Newark, NJ	Sep. 30, 2011 Mortgages payable maturing in August 2030 909 Broad St - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in December 2030 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in December 2030 Teachers Village - Newark, NJ Primary beneficiary RBH-TRB Newark Holdings LLC Subsidiaries	Sep. 30, 2012 Mortgages payable maturing in February 2032 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in February 2022 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in February 2014 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in February 2034 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in February 2034 Teachers Village - Newark, NJ Primary beneficiary RBH-TRB Newark Holdings LLC Subsidiaries	Sep. 30, 2012 Mortgages payable maturing in March 2013 Teachers Village - Newark, NJ	Sep. 30, 2011 Mortgages payable maturing in March 2013 Teachers Village - Newark, NJ	Sep. 30, 2011 Mortgages payable maturing in March 2013 Teachers Village - Newark, NJ Consolidated joint venture RBH-TRB Newark Holdings LLC Subsidiaries Guarantee	Sep. 30, 2012 Mortgages payable maturing in August 2019 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in September 2042 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in December 2023 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in August 2034 Teachers Village - Newark, NJ	Sep. 30, 2012 Mortgages payable maturing in June 2012 Teachers Village - Newark, NJ Primary beneficiary RBH-TRB Newark Holdings LLC Subsidiaries Guarantee
Debt Obligations
Total debt obligations	$ 206,684,000	$ 51,817,000	$ 169,284,000	$ 14,417,000		$ 1,200,000	$ 1,954,000	$ 2,041,000		$ 1,990,000	$ 45,200,000	$ 7,680,000	$ 6,462,000	$ 4,687,000	$ 25,680,000	$ 900,000	$ 900,000	$ 6,132,000	$ 6,314,000	$ 22,748,000		$ 4,250,000	$ 988,000	$ 1,380,000	$ 1,832,000		$ 2,738,000	$ 3,962,000		$ 15,700,000	$ 5,250,000	$ 13,491,000	$ 2,212,000
Interest rate (as a percent)					7.00%		5.25%				3.78%	3.98%	6.50%	4.49%	3.91%	7.00%		6.00%		5.50%	5.50%	3.46%	2.00%	2.50%			17.00%				3.28%	8.65%
Reference rate									LIBOR																					LIBOR
Margin interest above reference rate (as a percent)										3.15%																				3.00%
Guaranteed obligations																													991,000					685,000
Interest covered by United States Treasury Department (as a percent)																					4.99%
Effective interest rate (as a percent)																					0.51%
Bonds serviced in full by annual PILOT																					256,000					311,000
Bonds serviced in full by annual PILOT at maturity																					$ 281,000					$ 344,000