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Note L - Stock Options (Details) - Stock Option Activity - $ / shares	12 Months Ended
	Sep. 26, 2015	Sep. 27, 2014	Sep. 28, 2013
Incentive Stock Options [Member]
Note L - Stock Options (Details) - Stock Option Activity [Line Items]
Balance, September 30, 2012	295,645	259,852
Balance, September 30, 2012	$ 60.83	$ 51.17
Balance	332,352	295,645	259,852
Balance	$ 77.04	$ 60.83	$ 51.17
Granted	114,488	83,440	1,600
Granted	$ 100.94	$ 82.07	$ 63.13
Exercised	(70,792)	(39,097)	(84,628)
Exercised	$ 47.30	$ 42.42	$ 34.58
Canceled	(6,989)	(8,550)	(12,800)
Canceled	$ 84.13	$ 58.68	$ 51.01
Exercisable Options
September 26, 2015	140,263
September 26, 2015	$ 55.34
Nonqualified Stock Options [Member]
Note L - Stock Options (Details) - Stock Option Activity [Line Items]
Balance, September 30, 2012	249,379	231,247
Balance, September 30, 2012	$ 53.38	$ 44.77
Balance	297,941	249,379	231,247
Balance	$ 63.34	$ 53.38	$ 44.77
Granted	55,152	38,132	20,000
Granted	$ 106.96	$ 88.26	$ 80.79
Exercised	(6,590)	(20,000)
Exercised	$ 51.14	$ 20.43
Exercisable Options
September 26, 2015	164,657
September 26, 2015	$ 41.57

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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