Real Estate Loans (Details 2) (USD $)											0 Months Ended
	Mar. 31, 2013	Sep. 30, 2012	Mar. 31, 2013 Multi-Family	Sep. 30, 2012 Multi-Family	Mar. 31, 2013 Parking Facility	Mar. 31, 2013 Hotel	Mar. 31, 2013 Real estate loan concentration Multi-Family Georgia Performing	Mar. 31, 2013 Real estate loan concentration Multi-Family New York Performing	Mar. 31, 2013 Real estate loan concentration Parking Facility New York Performing	Mar. 31, 2013 Real estate loan concentration Hotel New York Performing	Mar. 31, 2013 Gross loans Real estate loan concentration item	Mar. 31, 2013 Gross loans Real estate loan concentration Multi-Family Georgia Performing	Mar. 31, 2013 Gross loans Real estate loan concentration Multi-Family New York Performing	Mar. 31, 2013 Gross loans Real estate loan concentration Parking Facility New York Performing	Mar. 31, 2013 Gross loans Real estate loan concentration Hotel New York Performing	Mar. 31, 2013 Total assets Real estate loan concentration Multi-Family Georgia Performing	Mar. 31, 2013 Total assets Real estate loan concentration Multi-Family New York Performing	Mar. 31, 2013 Total assets Real estate loan concentration Parking Facility New York Performing	Mar. 31, 2013 Total assets Real estate loan concentration Hotel New York Performing	Mar. 31, 2013 Real properties Geographic concentration Georgia Senior mortgage loans	Mar. 31, 2013 Real properties Geographic concentration New York Senior mortgage loans	Mar. 31, 2013 Real properties Geographic concentration Other states Senior mortgage loans item	Mar. 31, 2013 Real properties Geographic concentration Michigan Senior mortgage loans	Mar. 31, 2013 Real properties Geographic concentration Florida Senior mortgage loans
Loans outstanding in excess of 10%
Number of borrowers with loans outstanding in excess of 10% of total loans											4
Number of loans											4
Threshold For Disclosure Percentage											10.00%
Gross Loan Balance	$ 91,476,000	$ 37,096,000	$ 42,729,000	$ 35,096,000	$ 15,148,000	$ 15,743,000	$ 15,095,000	$ 9,329,000	$ 14,522,000	$ 14,100,000
Percentage of total												16.50%	10.20%	15.90%	15.40%	3.40%	2.10%	3.30%	3.20%	17.00%	64.00%	5.00%	9.00%	5.00%
Number of other states in which loans secured by real properties were located																						2