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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 26, 2019	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Income Statement [Abstract]
Net sales	$ 115,069	$ 130,316	$ 441,949	$ 472,353
Cost of sales	90,200	101,749	336,076	356,536
Gross profit	24,869	28,567	105,873	115,817
Operating expenses:
Selling	15,537	15,271	48,040	45,560
General and administrative	8,574	8,335	25,685	26,138
Product design and development	8,280	8,299	26,611	26,294
Total operating expenses	32,391	31,905	100,336	97,992
Operating (loss) income	(7,522)	(3,338)	5,537	17,825
Nonoperating income (expense):
Interest income	328	158	713	520
Interest expense	(45)	(40)	(86)	(173)
Other (expense) income, net	(203)	(487)	(423)	(429)
(Loss) income before income taxes	(7,442)	(3,707)	5,741	17,743
Income tax (benefit) expense	(4,123)	2,482	(4,120)	8,371
Net (loss) income	$ (3,319)	$ (6,189)	$ 9,861	$ 9,372
Weighted average shares outstanding:
Basic (in shares)	45,018	44,518	44,834	44,403
Diluted (in shares)	45,018	44,518	45,139	44,798
(Loss) earnings per share:
Basic (in dollars per share)	$ (0.07)	$ (0.14)	$ 0.22	$ 0.21
Diluted (in dollars per share)	$ (0.07)	$ (0.14)	$ 0.22	$ 0.21

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