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Condensed Consolidated Statements of Shareholders Equity (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 21, 2011	Dec. 22, 2010
Statement of Stockholders' Equity [Abstract]
Reclassification of investment appreciation in net earnings, tax	$ 552	$ 818
Net change in unrealized gains and losses on investments, tax	$ 7,758	$ 279

Tax effect on the reclassification adjustment for gains or losses realized upon the sale of securities during the period.

Tax effect on gross appreciation or the gross loss in value of the total of unsold securities during the period being reported on.