XML 30 R40.htm IDEA: XBRL DOCUMENT

Note 10 - Share-Based Compensation (Detail) - Weighted-average option fair values and valuation assumptions (USD $)	9 Months Ended
	Dec. 25, 2011
Weighted-average option fair values (in Dollars per share)	$ 5.039
Expected life (years)	5 years
Interest rate	1.60%
Volatility	28.90%
Dividend yield	0.00%

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