Note 8 - Stock-Based Compensation (Details) - Summary of Stock Option Activity (USD $)	12 Months Ended
	May 03, 2014
Summary of Stock Option Activity [Abstract]
Options outstanding, beginning of year	441,810
Options outstanding, beginning of year	$ 6.86	[1]
Granted	5,245
Granted	$ 7.42	[1]
Exercised	(6,000)
Exercised	$ 7.87	[1]
Cancelled	(36,700)
Cancelled	$ 7.74	[1]
Options outstanding, end of year	404,355
Options outstanding, end of year	$ 6.67	[1]
Options exercisable, end of year	269,169
Options exercisable, end of year	$ 5.69	[1]

[1] Weighted average exercise price.