Employee Benefits And Deferred Compensation (Narrative) (Details) (USD $)	12 Months Ended
	Apr. 27, 2012	Apr. 29, 2011	Apr. 30, 2010
Employee Benefits And Deferred Compensation [Abstract]
Percentage of employee's contributions matched up to the first $1000	100.00%	100.00%	100.00%
Percentage of employee's contribution matched over $1,000	50.00%	50.00%	50.00%
Amount of employee contributions matched at 100%.	$ 1,000	$ 1,000	$ 1,000
Maximum amount of matching contributions per employee	$ 3,000	$ 3,000	$ 3,000
Number of years for matched contributions to vest	3 years	3 years	3 years