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Credit Facility, Senior Notes and Mortgage Company Loan Facility Mortgage Company Loan Facility (Details Textual 2) (Mortgage Credit Facility [Member], USD $)
12 Months Ended
Jul. 23, 2013
Jul. 31, 2013
Mortgage Credit Facility [Member]
   
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity   $ 50,000,000
Mortgage Loan Facility Maximum Borrowing Capacity Increased   $ 75,000,000
Interest Rate on Loan Commitments in Addition to Libor 2.00%  
Debt Instrument, Interest Rate, Stated Percentage Rate Range, Minimum 3.00%