Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Jan. 27, 2018	Jan. 28, 2017	Jan. 27, 2018	Jan. 28, 2017
Net sales	$ 227,477	$ 194,564	$ 731,428	$ 614,852
Cost of sales	136,284	118,644	439,652	374,721
Gross profit	91,193	75,920	291,776	240,131
Selling, general and administrative expenses	45,443	39,158	137,589	122,043
Interest expense	50	51	151	139
Other income - net	426	197	1,043	416
Income before income taxes	46,126	36,908	155,079	118,365
Provision for income taxes	5,046	12,623	41,747	40,481
Net income	$ 41,080	$ 24,285	$ 113,332	$ 77,884
Earnings per common share:
Basic (in dollars per share)	$ 0.88	$ 0.52	$ 2.43	$ 1.67
Diluted (in dollars per share)	$ 0.88	$ 0.52	$ 2.42	$ 1.67
Weighted average common shares outstanding:
Basic (in shares)	46,603	46,566	46,594	46,561
Diluted (in shares)	46,923	46,763	46,921	46,764