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Employee 401(k) Savings Plan (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Apr. 27, 2013	Apr. 28, 2012	Apr. 30, 2011
Compensation and Retirement Disclosure [Abstract]
Employer matching contribution, percent	3.00%
Employer 401(k) contribution	$ 1,341	$ 1,326	$ 1,261

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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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- Definition

Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

+ References

No definition available.

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