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Information Relative to Outstanding VIE Debt (Detail) (USD $)
Oct. 31, 2011
Oct. 31, 2011
Teachers Federal Credit Union Variable Interest Entity
Jan. 31, 2010
Teachers Federal Credit Union Variable Interest Entity
Oct. 31, 2011
Small Business Administration Variable Interest Entity
Sep. 30, 2010
Small Business Administration Variable Interest Entity
Variable Interest Entity [Line Items]          
Mortgage payable $ 1,394,230 $ 777,155 $ 800,000 $ 617,075 $ 643,000