Goodwill and Intangible Assets (Details) (USD $)	3 Months Ended		12 Months Ended
	Dec. 25, 2012	Dec. 27, 2011	Dec. 25, 2012	Dec. 27, 2011	Dec. 28, 2010
Changes in the carrying amount of goodwill
Balance at the beginning of the period			$ 110,946,000	$ 111,785,000
Additions			2,741,000
Impairment	(500,000)	(800,000)	(252,000)	(839,000)	(1,700,000)
Balance at the end of the period	113,435,000	110,946,000	113,435,000	110,946,000	111,785,000
Changes in the carrying amount of intangible assets
Balance at the beginning of the period, net			9,042,000	10,118,000
Additions			1,511,000
Amortization expense			(1,076,000)	(1,076,000)
Impairment			(213,000)
Balance at the end of the period, net	9,264,000	9,042,000	9,264,000	9,042,000	10,118,000
Gross carrying amount	15,100,000	14,000,000	15,100,000	14,000,000
Accumulated amortization	5,900,000	5,000,000	5,900,000	5,000,000
Minimum
Useful life
Expected amortization expense for each of the next five years			1,000,000
Maximum
Useful life
Expected amortization expense for each of the next five years			$ 1,700,000
Reacquired franchise rights
Useful life
Weighted average amortization period			13 years