Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Jul. 31, 2019	Jul. 31, 2018
Income Statement [Abstract]
Total revenue	[1]	$ 2,626,629	$ 2,588,432
Cost of goods sold (exclusive of depreciation and amortization, shown separately below)	[1]	2,060,943	2,066,664
Operating expenses		379,841	359,392
Depreciation and amortization		59,808	58,840
Interest, net		13,721	14,406
Income before income taxes		112,316	89,130
Federal and state income taxes		26,501	18,906
Net income		$ 85,815	$ 70,224
Net income per common share
Basic (in dollars per share)		$ 2.33	$ 1.92
Diluted (in dollars per share)		$ 2.31	$ 1.90
Basic weighted average shares outstanding (in shares)		36,864,070	36,669,021
Plus effect of stock compensation (in shares)		221,852	311,387
Diluted weighted average shares outstanding (in shares)		37,085,922	36,980,408
Dividends declared per share (in dollars per share)		$ 0.32	$ 0.29
Excise taxes		$ 274,617	$ 257,969

[1] Includes excise taxes of: $274,617 and $257,969