CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND OTHER COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jul. 29, 2017	Jul. 30, 2016
Income Statement [Abstract]
Net sales	$ 1,304,115	$ 1,332,436
Cost of sales	1,005,067	1,015,258
Gross profit	299,048	317,178
Operating expenses	242,215	251,762
Operating income	56,833	65,416
Other income (expense):
Other income, net	1,512	2,364
Interest expense	(11,203)	(10,162)
Income before taxes	47,142	57,618
Income tax expense	16,295	18,712
Net income	$ 30,847	$ 38,906
Earnings per share:
Basic (in USD per share)	$ 0.33	$ 0.41
Diluted (in USD per share)	$ 0.33	$ 0.40
Weighted average shares:
Basic (in shares)	93,350	95,461
Diluted (in shares)	94,019	96,090
Dividends declared per common share (in USD per share)	$ 0.26	$ 0.24
Comprehensive income
Net income	$ 30,847	$ 38,906
Foreign currency translation gain (loss)	12,084	(20,257)
Cash flow hedges, net of tax	437	433
Comprehensive income	$ 43,368	$ 19,082