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Condensed Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2017 | Oct. 31, 2016
Income Statement [Abstract] |  |  |  |  |
Total revenue (a) | [1] | $ 2,153,745 | $ 1,920,055 | $ 4,247,484 | $ 3,890,134
Cost of goods sold (exclusive of depreciation and amortization, shown separately below) (a) | [1] | 1,686,088 | 1,476,537 | 3,303,130 | 2,996,821
Operating expenses |  | 322,949 | 295,289 | 644,196 | 587,417
Depreciation and amortization |  | 54,157 | 48,675 | 106,526 | 94,530
Interest, net |  | 12,976 | 10,075 | 24,351 | 20,615
Income before income taxes |  | 77,575 | 89,479 | 169,281 | 190,751
Federal and state income taxes |  | 28,657 | 32,299 | 63,605 | 66,179
Net income |  | $ 48,918 | $ 57,180 | $ 105,676 | $ 124,572
Net income per common share |  |  |  |  |
Basic (in dollars per share) |  | $ 1.29 | $ 1.46 | $ 2.77 | $ 3.18
Diluted (in dollars per share) |  | $ 1.28 | $ 1.44 | $ 2.75 | $ 3.14
Basic weighted average shares outstanding (in shares) |  | 37,804,649 | 39,189,804 | 38,108,105 | 39,177,746
Plus effect of stock compensation (in shares) |  | 378,950 | 472,735 | 379,802 | 472,713
Diluted weighted average shares outstanding (in shares) |  | 38,183,599 | 39,662,539 | 38,487,907 | 39,650,459
Dividends declared per share (in dollars per share) |  | $ 0.26 | $ 0.24 | $ 0.52 | $ 0.48
Excise taxes |  | $ 239,070 | $ 222,993 | $ 477,628 | $ 448,169
[1] | Includes excise taxes of: $239,070, $222,993, $477,628, and $448,169

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