Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2019
Income Statement [Abstract]
Net sales	$ 1,744,014	$ 1,650,333	$ 1,645,319
Cost of sales and distribution	1,424,739	1,321,147	1,298,846
Gross Profit	319,275	329,186	346,473
Selling and marketing expenses	89,464	83,608	89,875
General and administrative expenses	112,283	113,334	112,917
Restructuring charges, net	5,848	(18)	1,987
Operating Income	111,680	132,262	141,694
Interest expense, net	23,128	29,027	35,652
Other (income) expense, net	11,117	2,687	(4,846)
Income Before Income Taxes	77,435	100,548	110,888
Income tax expense	18,672	25,687	27,200
Net Income	$ 58,763	$ 74,861	$ 83,688
Earnings per share
Basic (usd per share)	$ 3.46	$ 4.43	$ 4.84
Diluted (usd per share)	$ 3.45	$ 4.42	$ 4.83