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Summary Of Significant Accounting Policies (Details) (USD $)
 12 Months Ended
Sep. 28, 2013
segment
item
Sep. 29, 2012
Sep. 24, 2011
Sep. 25, 2010
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 203      
Number of segments 1      
Other income, net $ 2,900,341 $ 3,527,065 $ 4,159,445  
Outstanding checks in excess of bank balances 4,200,000 11,400,000    
Cash and cash equivalents 16,844,007 4,683,410 12,421,250 57,854,587
Number of banks 5      
FDIC insurance limit per bank 250,000      
Total depreciation expense 94,900,000 90,600,000 80,400,000  
Capitalized loan and leasehold costs 13,200,000 10,200,000    
Accumulated amortization 29,600,000 25,700,000    
Costs to be amortized over the life of the underlying debt instrument or lease, per year. 1,400,000      
Write off of capitalized loan costs 15,300,000      
Liability coverage per occurrence for workers compensation 750,000      
Liability coverage for general liability 500,000      
Liability coverage per covered person for medical care benefits 325,000      
Company's self insurance reserves 29,400,000 26,700,000    
Undrawn letters of credit 9,300,000      
Expiry date of undrawn letters of credit, Start Oct. 01, 2013      
Expiry date of undrawn letters of credit, End Nov. 01, 2014      
Unrecognized tax benefits 149,100 149,400    
Interest and penalties, expense 55,000      
Advertising and promotion expenses, net of vendor allowances 13,900,000 14,100,000 13,900,000  
Depreciation expense included in costs of goods sold totaled 14,200,000 9,200,000 5,400,000  
Fluid dairy revenues recognition 69.00%      
Vendor allowances applied as a reduction of merchandise costs 121,900,000 114,300,000 109,900,000  
Vendor advertising allowances recorded as a reduction of advertising expense 14,500,000 13,200,000 13,100,000  
Demand Deposits [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Cash and cash equivalents $ 12,200,000      
Buildings [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 30 years      
Minimum [Member] | Store, Office And Warehouse Equipment [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 3 years      
Minimum [Member] | Transportation Equipment [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 3 years      
Minimum [Member] | Leasehold Improvements [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 3 years      
Maximum [Member] | Store, Office And Warehouse Equipment [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 10 years      
Maximum [Member] | Transportation Equipment [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 5 years      
Maximum [Member] | Leasehold Improvements [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Useful life of property, plant and equipment 30 years      
Georgia [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 73      
North Carolina [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 70      
South Carolina [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 36      
Tennessee [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 21      
Virginia [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 2      
Alabama [Member]
        
Summary Of Significant Accounting Policies [Line Items]        
Number of locations 1