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Computation of Earnings Per Common Share (Tables) | 9 Months Ended
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Apr. 23, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Reconciliation | The table below sets forth the computation of basic and diluted earnings per common share. Basic earnings per common share is computed based on the weighted average number of common shares outstanding during the period. Diluted earnings per common share includes the weighted average number of common shares outstanding during the period and dilutive potential common shares arising from the Company’s stock-based awards, senior convertible notes and warrants if their inclusion is dilutive under the treasury stock method. Common stock equivalents related to stock-based awards, senior convertible notes and warrants are excluded from diluted earnings per common share calculations if their effect would be anti-dilutive.
| For the Three Months Ended |  | For the Nine Months Ended
| April 23, 2016 |  | April 25, 2015 |  | April 23, 2016 |  | April 25, 2015
| (Dollars in thousands, except share amounts)
Net income available to common stockholders (numerator) | $ | 33,083 |  |  | $ | 20,258 |  |  | $ | 79,380 |  |  | $ | 50,497 |
Weighted-average number of common shares (denominator) | 32,433,560 |  |  | 34,107,262 |  |  | 32,656,490 |  |  | 34,081,381 |
Basic earnings per common share | $ | 1.02 |  |  | $ | 0.59 |  |  | $ | 2.43 |  |  | $ | 1.48 |
Weighted-average number of common shares | 32,433,560 |  |  | 34,107,262 |  |  | 32,656,490 |  |  | 34,081,381 |
Potential shares of common stock arising from stock options, and unvested restricted share units | 617,374 |  |  | 921,694 |  |  | 830,025 |  |  | 1,010,263 |
Total shares-diluted (denominator) | 33,050,934 |  |  | 35,028,956 |  |  | 33,486,515 |  |  | 35,091,644 |
Diluted earnings per common share | $ | 1.00 |  |  | $ | 0.58 |  |  | $ | 2.37 |  |  | $ | 1.44 |
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] | The weighted-average number of common shares outstanding used in the computation of diluted earnings per common share does not include the effect of the following instruments because their inclusion would have been anti-dilutive:
| For the Three Months Ended |  | For the Nine Months Ended
| April 23, 2016 |  | April 25, 2015 |  | April 23, 2016 |  | April 25, 2015
Stock-based awards | 116,544 |  |  | 158,113 |  |  | 79,792 |  |  | 159,484 |
0.75% senior convertible notes due 2021* | 5,005,734 |  |  | — |  |  | 5,005,734 |  |  | — |
Warrants* | 5,005,734 |  |  | — |  |  | 5,005,734 |  |  | — |
Total anti-dilutive weighted shares excluded from the calculation of earnings per common share | 10,128,012 |  |  | 158,113 |  |  | 10,091,260 |  |  | 159,484 |
*See Note 10, Debt, for additional information related to the Company’s senior convertible notes and warrant transactions.

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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