Significant Accounting Policies (Details)	12 Months Ended
	Apr. 27, 2011
Significant Accounting Policies (Additional) (Textuals)
Cumulative inflation rate in an economy for applying Highly inflationary accounting	Three-year period meets or exceeds 100 percent
Original maturities of Cash equivalents defined as highly liquid investments	90 days or less.
Building [Member]
Significant Accounting Policies (Textuals)
Estimated useful lives for assets, maximum, in years	40
Machinery and Equipment [Member]
Significant Accounting Policies (Textuals)
Estimated useful lives for assets, maximum, in years	15
Software [Member]
Significant Accounting Policies (Textuals)
Estimated useful lives for assets, maximum, in years	7
Estimated useful lives for Computer software, minimum, in years	3
Leasehold Improvements [Member]
Significant Accounting Policies (Textuals)
Estimated useful lives for assets, maximum, in years	15