Long-Term Debt and Lines of Credit (Detail) - USD ($) $ in Thousands	Aug. 02, 2015	May. 03, 2015		Aug. 03, 2014
Debt Disclosure [Abstract]
Unsecured senior term notes	$ 2,200	$ 2,200		$ 4,400
Current maturities of long-term debt	$ (2,200)	$ (2,200)	[1]	(2,200)
Long-term debt, less current maturities of long-term debt				$ 2,200

[1] Derived from audited financial statements.