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Note 5 - Stock-Based Compensation (Detail) - Stock options valuation assumptions	6 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Risk-free interest rate	1.25%	1.18%
Dividend yield	0.74%	0.92%
Expected volatility	48.15%	54.67%
Expected term (in years)	6 years 171 days	5 years 9 months

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.

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