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Goodwill and Intangible Assets (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 27, 2011
Dec. 28, 2010
Dec. 27, 2011
Dec. 28, 2010
Changes in the carrying amount of goodwill        
Balance at the beginning of the period     $ 111,785,000 $ 113,465,000
Impairment (800,000) (1,680,000) (839,000) (1,680,000)
Balance at the end of the period 110,946,000 111,785,000 110,946,000 111,785,000
Changes in the carrying amount of intangible assets        
Balance at the beginning of the period, net     10,118,000 11,194,000
Amortization expense     (1,076,000) (1,076,000)
Balance at the end of the period, net 9,042,000 10,118,000 9,042,000 10,118,000
Gross carrying amount 14,000,000   14,000,000  
Accumulated amortization 5,000,000   5,000,000  
Expected amortization expense for each of the next five years     $ 1,100,000  
Reacquired franchise rights
        
Useful life        
Weighted average amortization period (in years)     14