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Computation of Earnings Per Common Share (Tables) | 6 Months Ended
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Jan. 27, 2018
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Reconciliation | The following table sets forth the computation of basic and diluted earnings per common share (dollars in thousands, except per share amounts):
| Six Months Ended |  | Fiscal Year Ended
| January 27, 2018 |  | July 29, 2017 |  | July 30, 2016 |  | July 25, 2015
Net income available to common stockholders (numerator) | $ | 68,835 |  |  | $ | 157,217 |  |  | $ | 128,740 |  |  | $ | 84,324 |
Weighted-average number of common shares (denominator) | 31,059,140 |  |  | 31,351,367 |  |  | 32,315,636 |  |  | 34,045,481 |
Basic earnings per common share | $ | 2.22 |  |  | $ | 5.01 |  |  | $ | 3.98 |  |  | $ | 2.48 |
Weighted-average number of common shares | 31,059,140 |  |  | 31,351,367 |  |  | 32,315,636 |  |  | 34,045,481 |
Potential shares of common stock arising from stock options, and unvested restricted share units(1) | 778,411 |  |  | 633,364 |  |  | 800,119 |  |  | 981,207 |
Potential shares of common stock issuable on conversion of 0.75% convertible senior notes due 2021(2) | 217,394 |  |  | — |  |  | — |  |  | — |
Total shares-diluted (denominator) | 32,054,945 |  |  | 31,984,731 |  |  | 33,115,755 |  |  | 35,026,688 |
Diluted earnings per common share | $ | 2.15 |  |  | $ | 4.92 |  |  | $ | 3.89 |  |  | $ | 2.41 |
Anti-dilutive weighted shares excluded from the calculation of earnings per common share:
Stock-based awards | 93,117 |  |  | 73,830 |  |  | 65,514 |  |  | 103,896 |
0.75% convertible senior notes due 2021 | 4,788,340 |  |  | 5,005,734 |  |  | 5,005,734 |  |  | — |
Warrants | 5,005,734 |  |  | 5,005,734 |  |  | 5,005,734 |  |  | — |
Total | 9,887,191 |  |  | 10,085,298 |  |  | 10,076,982 |  |  | 103,896 |
(1) As discussed in Note 1, Basis of Presentation and Accounting Policies, the Company has adopted ASU 2016-09. The amended guidance changed the treatment of windfalls (or shortfalls) arising from the vesting and exercise of share-based awards. Prior to ASU 2016-09, these amounts were recorded as an adjustment to additional paid-in capital. With the adoption of ASU 2016-09, these amounts are now included in the Company’s provision for income taxes. Because windfalls are no longer recognized in additional paid-in capital, the amount is excluded from the hypothetical proceeds used to repurchase shares when computing diluted earnings per common share under the treasury stock method. As a result of the amended guidance, diluted shares increased by approximately 177,575 shares during the six months ended January 27, 2018.

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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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