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Property and Equipment – at cost (Details) - USD ($)
Oct. 31, 2016
Jul. 31, 2016
Property, Plant and Equipment [Line Items]    
Property and equipment - net $ 49,168,430 $ 49,064,737
Building Improvements at 9 Bond Street in Brooklyn, NY [Member]    
Property, Plant and Equipment [Line Items]    
Construction in progress 114,695
Building improvements at 25 Elm Place in Brooklyn, NY [Member]    
Property, Plant and Equipment [Line Items]    
Construction in progress 1,728,832 1,697,292
Buildings and Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 78,063,803 77,693,718
Improvements to Leased Property [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 1,478,012 1,478,012
Land [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 6,067,805 6,067,805
Construction in Progress [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 1,843,527 1,697,292
Property [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 87,453,147 86,936,827
Less accumulated depreciation 38,410,937 38,008,810
Property and equipment - net 49,042,210 48,928,017
Fixtures and Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 144,545 144,545
Other Fixed Assets [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 195,478 195,478
Fixtures and equipment and other [Member]    
Property, Plant and Equipment [Line Items]    
Property and equipment 340,023 340,023
Less accumulated depreciation 213,803 203,303
Property and equipment - net $ 126,220 $ 136,720