Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Jul. 31, 2020	Jul. 31, 2019
Income Statement [Abstract]
Net sales	$ 390,087	$ 427,365
Cost of sales and distribution	309,949	332,846
Gross Profit	80,138	94,519
Selling and marketing expenses	19,898	20,687
General and administrative expenses	29,983	29,432
Restructuring charges, net	3,460	(19)
Operating Income	26,797	44,419
Interest expense, net	6,030	8,088
Other income, net	(1,688)	(7)
Income Before Income Taxes	22,455	36,338
Income tax expense	5,970	9,457
Net Income	$ 16,485	$ 26,881
Weighted Average Shares Outstanding
Basic (in shares)	16,936,832	16,864,870
Diluted (in shares)	17,013,444	16,907,463
Net earnings per share
Basic (in usd per share)	$ 0.97	$ 1.59
Diluted (in usd per share)	$ 0.97	$ 1.59