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Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified | 12 Months Ended
--- | ---
Jul. 31, 2014 | Jul. 31, 2013 | Jul. 31, 2012
Net sales | $ 3,525,456 | $ 3,241,795 | $ 2,639,798
Cost of products sold | 3,055,060 | 2,817,256 | 2,320,268
Gross profit | 470,396 | 424,539 | 319,530
Selling, general and administrative expenses | 208,712 | 194,650 | 148,260
Impairment charges | 710 | 2,000 |
Amortization of intangible assets | 12,920 | 10,460 | 10,651
Interest income | 1,577 | 2,628 | 3,744
Interest expense | 10 | 6 | 47
Other income, net | 3,198 | 1,921 | 1,072
Income from continuing operations before income taxes | 252,819 | 221,972 | 165,388
Income taxes | 77,303 | 70,296 | 53,953
Net income from continuing operations | 175,516 | 151,676 | 111,435
Income from discontinued operations, net of income taxes | 3,486 | 1,186 | 10,304
Net income | 179,002 | 152,862 | 121,739
Earnings per common share from continuing operations: |  |  |
Basic | $ 3.29 | $ 2.86 | $ 2.07
Diluted | $ 3.29 | $ 2.86 | $ 2.07
Earnings per common share from discontinued operations: |  |  |
Basic | $ 0.07 | $ 0.02 | $ 0.19
Diluted | $ 0.06 | $ 0.02 | $ 0.19
Earnings per common share: |  |  |
Basic | $ 3.36 | $ 2.88 | $ 2.26
Diluted | $ 3.35 | $ 2.88 | $ 2.26
Net income | 179,002 | 152,862 | 121,739
Unrealized appreciation on investments, net of tax effects of $12, $23 and $6 | 22 | 38 | 7
Comprehensive income | $ 179,024 | $ 152,900 | $ 121,746

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