Note 11 - Quarterly Financial Data (Unaudited) (Details) - Summary of Quarterly Financial Data (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended									12 Months Ended
	May 03, 2014		Jan. 25, 2014	Oct. 26, 2013	Jul. 27, 2013	Apr. 27, 2013	Jan. 26, 2013	Oct. 27, 2012	Jul. 28, 2012	May 03, 2014	Apr. 27, 2013	Apr. 28, 2012
Summary of Quarterly Financial Data [Abstract]
Net sales	$ 164,342	[1]	$ 136,774	$ 167,666	$ 172,353	$ 167,867	$ 144,723	$ 166,568	$ 182,849	$ 641,135	$ 662,007	$ 628,886
Gross profit	55,388	[1]	44,688	58,830	58,749	58,013	46,353	54,591	58,293	217,655	217,250	213,257
Net income	$ 11,932	[1]	$ 7,136	$ 12,497	$ 12,070	$ 12,097	$ 8,414	$ 12,017	$ 14,392	$ 43,635	$ 46,920	$ 43,993
Earnings per common share – basic (in Dollars per share)	$ 0.25	[1]	$ 0.15	$ 0.27	$ 0.26	$ 0.26	$ 0.18	$ 0.26	$ 0.31	$ 0.93	$ 1.01	$ 0.95
Earnings per common share – diluted (in Dollars per share)	$ 0.25	[1]	$ 0.15	$ 0.27	$ 0.26	$ 0.26	$ 0.18	$ 0.26	$ 0.31	$ 0.92	$ 1.01	$ 0.95

[1] Fourth quarter of Fiscal 2014 consisted of 14 weeks while other quarters consisted of 13 weeks.