CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 30, 2016	Aug. 01, 2015
Income Statement [Abstract]
Net sales	$ 157,146	$ 150,221
Cost of goods sold	118,079	114,720
Gross profit	39,067	35,501
Operating expenses:
Selling expense	15,259	14,264
General and administrative	8,783	8,170
Product design and development	7,043	6,968
Total operating expenses	31,085	29,402
Operating income	7,982	6,099
Nonoperating income (expense):
Interest income	205	298
Interest expense	(42)	(62)
Other income (expense), net	(94)	(443)
Income before income taxes	8,051	5,892
Income tax expense	2,512	2,116
Net income	$ 5,539	$ 3,776
Weighted average shares outstanding:
Basic (in shares)	44,079	43,797
Diluted (in shares)	44,141	44,073
Earnings per share:
Basic (in dollars per share)	$ 0.13	$ 0.09
Diluted (in dollars per share)	0.13	0.09
Cash dividend declared per share (in dollars per share)	$ 0.07	$ 0.10