Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Jan. 27, 2013	Apr. 29, 2012		Jan. 29, 2012
Other Assets Noncurrent [Line Items]
Cash surrender value - life insurance	$ 700	$ 1,327
Non-compete agreement, net	222	333
Other	273	247
Other assets	$ 1,195	$ 1,907	[1]	$ 1,944

[1] Derived from audited financial statements.