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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, 2013 | Jul. 31, 2012 | Jul. 31, 2011
Impairment charges | $ 13,525 |  | $ 3,466
Amortization of intangible assets | 11,037 | 11,135 | 10,262
Income from continuing operations before income taxes | 221,972 | 165,388 | 132,337
Income taxes | 70,296 | 53,953 | 40,690
Net income from continuing operations | 151,676 | 111,435 | 91,647
Income from discontinued operations, net of income taxes | 1,186 | 10,304 | 14,626
Net income | 152,862 | 121,739 | 106,273
Earnings per common share from continuing operations: |  |  |
Basic | $ 2.86 | $ 2.07 | $ 1.66
Diluted | $ 2.86 | $ 2.07 | $ 1.66
Earnings per common share from discontinued operations: |  |  |
Basic | $ 0.02 | $ 0.19 | $ 0.26
Diluted | $ 0.02 | $ 0.19 | $ 0.26
Earnings per common share: |  |  |
Basic | $ 2.88 | $ 2.26 | $ 1.92
Diluted | $ 2.88 | $ 2.26 | $ 1.92
Net income | 152,862 | 121,739 | 106,273
Unrealized appreciation on investments, net of tax effects of $23, $6 and $158 | 38 | 7 | 257
Comprehensive income | 152,900 | 121,746 | 106,530
Continuing Operations |  |  |
Net sales | 3,241,795 | 2,639,798 | 2,340,442
Cost of products sold | 2,817,256 | 2,320,268 | 2,041,506
Gross profit | 424,539 | 319,530 | 298,936
Selling, general and administrative expenses | 194,650 | 148,260 | 160,532
Impairment charges | 2,000 |  | 2,036
Amortization of intangible assets | 10,460 | 10,651 | 9,595
Interest income | 2,628 | 3,744 | 3,880
Interest expense | 6 | 47 | 1
Other income, net | $ 1,921 | $ 1,072 | $ 1,685

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition The change in equity [net assets] of a business enterprise during a period from transactions and other events and circumstances from non-owner sources which are attributable to the reporting entity. It includes all changes in equity during a period except those resulting from investments by owners and distributions to owners, but excludes any and all transactions which are directly or indirectly attributable to that ownership interest in subsidiary equity which is not attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=6519514 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Comprehensive Income -URI http://asc.fasb.org/extlink&oid=16317811 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=20435746&loc=d3e557-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=6518256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph c(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 30 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A5 -Appendix A + Details
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