Note A - Summary of Significant Accounting Policies (Detail) - Calculation of EPS (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Sep. 29, 2012		Sep. 24, 2011		Sep. 25, 2010
Earnings Per Basic Share
Net Income available to common stockholders (in Dollars)	$ 54,118		$ 55,063		$ 48,409
Net Income available to common stockholders (in Shares)	18,854		18,672		18,528
Net Income available to common stockholders	$ 2.87		$ 2.95		$ 2.61
Effect of Dilutive Securities
Options (in Dollars)	63		117		175
Options	$ (0.01)		$ (0.02)		$ (0.02)
Earnings Per Diluted Share
Net Income available to common stockholders plus assumed conversions (in Dollars)	$ 54,118		$ 55,063		$ 48,409
Net Income available to common stockholders plus assumed conversions (in Shares)	18,917		18,789		18,703
Net Income available to common stockholders plus assumed conversions	$ 2.86	[1]	$ 2.93	[1]	$ 2.59

[1] Total of quarterly amounts do not necessarily agree to the annual report amounts due to separate quarterly calculations of weighted average shares outstanding.