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Quarterly Information | 12 Months Ended
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Jul. 31, 2016
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Information (in thousands, except per share data) (Unaudited) | 19 — Quarterly Financial Information (in thousands, except per share data) (Unaudited)(1)
| Fiscal Quarter
Fiscal Year 2016 | First (2) |  | Second (2) |  | Third (2) |  | Fourth
Total revenue | $ | 288,838 |  |  | $ | 299,706 |  |  | $ | 347,246 |  |  | $ | 332,659 |
Gross margin | 120,861 |  |  | 124,614 |  |  | 157,647 |  |  | 141,464 |
Operating income | 86,246 |  |  | 92,085 |  |  | 121,948 |  |  | 106,191 |
Income before income taxes | 81,760 |  |  | 91,552 |  |  | 116,568 |  |  | 105,985 |
Net income | 52,610 |  |  | 59,007 |  |  | 74,623 |  |  | 84,120 |
Basic net income per common share | $ | 0.44 |  |  | $ | 0.50 |  |  | $ | 0.68 |  |  | $ | 0.77 |
Diluted net income per common share | $ | 0.41 |  |  | $ | 0.47 |  |  | $ | 0.63 |  |  | $ | 0.71 |
| Fiscal Quarter
Fiscal Year 2015 | First |  | Second |  | Third |  | Fourth
Total revenue | $ | 290,386 |  |  | $ | 276,258 |  |  | $ | 297,142 |  |  | $ | 282,293 |
Gross margin | 122,308 |  |  | 114,867 |  |  | 127,417 |  |  | 118,784 |
Operating income | 82,401 |  |  | 80,468 |  |  | 94,767 |  |  | 86,765 |
Income before income taxes | 82,223 |  |  | 80,104 |  |  | 88,296 |  |  | 81,446 |
Net income | 52,615 |  |  | 52,193 |  |  | 57,563 |  |  | 57,412 |
Basic net income per common share | $ | 0.42 |  |  | $ | 0.41 |  |  | $ | 0.46 |  |  | $ | 0.46 |
Diluted net income per common share | $ | 0.40 |  |  | $ | 0.40 |  |  | $ | 0.44 |  |  | $ | 0.44 |
(1) | Earnings per share were computed independently for each of the periods presented; therefore, the sum of the earnings per share amounts for the quarters may not equal the total for the year.
(2) | Net income and earnings per share data were revised from previously reported amounts due to the adoption of ASU No. 2016-09, Improvements to Employee Share-Based Payment Accounting. See Note 1 — Summary of Significant Accounting Policies.

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- Definition The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=68076893&loc=d3e1570-108306 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e765-108305 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=68064558&loc=d3e725-108305 + Details
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