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CONSOLIDATED STATEMENTS OF NET INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 30, 2017	Jul. 31, 2016
Income Statement [Abstract]
Net sales	$ 79,533	$ 80,682
Cost of sales	63,068	62,263
Gross profit	16,465	18,419
Selling, general and administrative expenses	9,501	9,746
Income from operations	6,964	8,673
Interest income	(131)	(25)
Other expense	353	152
Income before income taxes	6,742	8,546
Income taxes	1,640	3,233
Loss from investment in unconsolidated joint venture	118
Net income	$ 4,984	$ 5,313
Net income per share, basic	$ 0.40	$ 0.43
Net income per share, diluted	$ 0.40	$ 0.43
Average shares outstanding, basic	12,399	12,286
Average shares outstanding, diluted	12,590	12,463

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