XML 54 R53.htm IDEA: XBRL DOCUMENT

Note 8 - Stock-Based Compensation (Detail) - Valuation Assumptions of Stock Options	12 Months Ended
	Sep. 29, 2012	Oct. 01, 2011	Oct. 02, 2010
Expected term (in years)	6 years	5 years 69 days	5 years 270 days
Risk-free interest rate	1.17%	1.78%	2.28%
Expected volatility	52.97%	55.15%	61.12%
Expected dividend yield	1.06%	1.05%	1.31%

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References+ Details