SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE (Details) (USD $)	12 Months Ended					12 Months Ended
	Sep. 30, 2012 item	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2009	Dec. 05, 2012 First Mortgage Loans	Sep. 30, 2012 First Mortgage Loans Multi-family, Atlanta, GA Mortgage loans on real estate, final maturity Mar. 2013 item	Sep. 30, 2012 First Mortgage Loans Multi-family, New York, NY Mortgage loans on real estate, final maturity Jan. 2013 item	Sep. 30, 2012 First Mortgage Loans Multi-family, New York, NY Mortgage loans on real estate, final maturity July 2013 item	Sep. 30, 2012 First Mortgage Loans Multi-family, New York, NY Mortgage loans on real estate, final maturity Dec. 2012 item	Sep. 30, 2012 First Mortgage Loans Multi-family, Southfield, MI Mortgage loans on real estate, final maturity Aug. 2013 item	Sep. 30, 2012 First Mortgage Loans Multi-family, Jacksonville, FL Mortgage loans on real estate, final maturity July 2013 item	Sep. 30, 2012 First Mortgage Loans Multi-family, Brooklyn, NY Mortgage loans on real estate, final maturity Dec. 2012 item	Sep. 30, 2012 Mezzanine Loan Retail, New York, NY Mortgage loans on real estate, final maturity Nov. 2012 item
SCHEDULE IV-MORTGAGE LOANS ON REAL ESTATE (INCLUDING MORTGAGE LOAN HELD FOR SALE)
# of Loans	8					1	1	1	1	1	1	1	1
Reference rate						Prime	Prime	Prime	Prime	Prime	Prime	Prime
Margin interest above reference rate (as a percent)						6.75%	8.75%	8.75%	8.75%	8.75%	8.75%	4.25%
Interest Rate (as a percent)													12.00%
Interest Rate Floor (as a percent)						10.00%	12.00%	12.00%	12.00%	12.00%	12.00%	12.50%
Prior Liens	$ 13,607,000												$ 13,607,000
Face Amount of Mortgages	37,096,000				23,000,000	13,753,000	7,811,000	2,008,000	438,000	6,295,000	2,450,000	2,341,000	2,000,000
Carrying Value of Mortgage	$ 36,584,000	$ 75,136,000	$ 54,336,000	$ 79,570,000		$ 13,556,000	$ 7,775,000	$ 1,935,000	$ 433,000	$ 6,145,000	$ 2,413,000	$ 2,329,000	$ 1,998,000