Note 12 (Detail) (USD $)	3 Months Ended		9 Months Ended
	Jun. 23, 2012	Jun. 25, 2011	Jun. 23, 2012	Jun. 25, 2011	Jun. 25, 2011
Held-to-maturity Securities Pledged as Collateral	$ 1,200,000		$ 1,200,000
Proceeds from Sale and Maturity of Marketable Securities	$ 21,000,000	$ 2,022,000	$ 81,023,000	$ 27,547,000	$ 27,547,000