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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 29, 2017	Jul. 30, 2016
Income Statement [Abstract]
Net sales	$ 172,728	$ 157,146
Cost of goods sold	128,082	118,079
Gross profit	44,646	39,067
Operating expenses:
Selling expense	14,939	15,259
General and administrative	8,935	8,783
Product design and development	9,047	7,043
Total operating expenses	32,921	31,085
Operating income	11,725	7,982
Nonoperating income (expense):
Interest income	211	205
Interest expense	(86)	(42)
Other income (expense), net	145	(94)
Income before income taxes	11,995	8,051
Income tax expense	3,566	2,512
Net income	$ 8,429	$ 5,539
Weighted average shares outstanding:
Basic (in shares)	44,244	44,079
Diluted (in shares)	44,461	44,141
Earnings per share:
Basic (in dollars per share)	$ 0.19	$ 0.13
Diluted (in dollars per share)	0.19	0.13
Cash dividend declared per share (in dollars per share)	$ 0.07	$ 0.10

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