CONSOLIDATED STATEMENTS OF NET INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 31, 2016	Aug. 02, 2015
Income Statement [Abstract]
Net sales	$ 80,682	$ 80,185
Cost of sales	62,263	63,983
Gross profit	18,419	16,202
Selling, general and administrative expenses	9,746	8,741
Income from operations	8,673	7,461
Interest expense		24
Interest income	(25)	(66)
Other expense	152	95
Income before income taxes	8,546	7,408
Income taxes	3,233	2,707
Net income	$ 5,313	$ 4,701
Net income per share, basic	$ 0.43	$ 0.38
Net income per share, diluted	$ 0.43	$ 0.38
Average shares outstanding, basic	12,286	12,277
Average shares outstanding, diluted	12,463	12,456