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Stock-Based Awards (Tables) | 12 Months Ended
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Jan. 25, 2020
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Schedule of Stock-based Compensation Expense and Related Tax Benefit Recognized | Stock-based compensation expense and the related tax benefit recognized during fiscal 2020, fiscal 2019, the 2018 transition period, and fiscal 2017 were as follows (dollars in thousands):
| Fiscal Year Ended |  | Six Months Ended |  | Fiscal Year Ended
| January 25, 2020 |  | January 26, 2019 |  | January 27, 2018 |  | July 29, 2017
Stock-based compensation | $ | 10,034 |  |  | $ | 20,187 |  |  | $ | 13,277 |  |  | $ | 20,805 |
Income tax effect of stock-based compensation | $ | 2,482 |  |  | $ | 5,043 |  |  | $ | 4,793 |  |  | $ | 7,996 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions | The following table summarizes the valuation of stock options and restricted share units granted during fiscal 2020, fiscal 2019, the 2018 transition period, and fiscal 2017 and the significant valuation assumptions:
| Fiscal Year Ended |  | Six Months Ended |  | Fiscal Year Ended
| January 25, 2020 |  | January 26, 2019 |  | January 27, 2018 |  | July 29, 2017
Weighted average fair value of RSUs granted | $ | 48.37 |  |  | $ | 97.90 |  |  | $ | 87.34 |  |  | $ | 79.04 |
Weighted average fair value of Performance RSUs granted | $ | 45.94 |  |  | $ | 106.19 |  |  | $ | 84.13 |  |  | $ | 79.29 |
Weighted average fair value of stock options granted | $ | 24.72 |  |  | $ | 48.19 |  |  | $ | 42.60 |  |  | $ | 39.90 |
Stock option assumptions: |  |  |  |  |  |  |
Risk-free interest rate | 2.3 | % |  | 2.7 | % |  | 2.3 | % |  | 2.3 | %
Expected life (in years) | 8.4 |  |  | 6.3 |  |  | 7.6 |  |  | 7.6 |
Expected volatility | 45.3 | % |  | 43.3 | % |  | 43.4 | % |  | 44.7 | %
Expected dividends | — |  |  | — |  |  | — |  |  | — |
Schedule of Share-based Compensation, Stock Options Award Activity | The following table summarizes stock option award activity during fiscal 2020:
| Stock Options
| Shares |  | Weighted Average Exercise Price |  | Weighted Average Remaining Contractual Life (In years) |  | Aggregate Intrinsic Value (In thousands)
Outstanding as of January 26, 2019 | 583,291 |  |  | $ | 34.24 |  |  |  |  |
Granted | 39,276 |  |  | $ | 45.94 |  |  |  |  |
Options exercised | (45,258 | ) |  | $ | 11.11 |  |  |  |  |
Canceled | — |  |  | $ | — |  |  |  |  |
Outstanding as of January 25, 2020 | 577,309 |  |  | $ | 36.85 |  |  | 4.1 |  | $ | 9,485 |
Exercisable options as of January 25, 2020 | 497,739 |  |  | $ | 31.44 |  |  | 3.4 |  | $ | 9,485 |
Schedule of Share-based Compensation, RSU and Performance RSU Activity | The following table summarizes RSU and Performance RSU award activity during fiscal 2020:
| Restricted Stock
| RSUs |  | Performance RSUs
| Share Units |  | Weighted Average Grant Price |  | Share Units |  | Weighted Average Grant Price
Outstanding as of January 26, 2019 | 126,470 |  |  | $ | 87.92 |  |  | 377,354 |  |  | $ | 96.51 |
Granted | 117,492 |  |  | $ | 48.37 |  |  | 475,629 |  |  | $ | 45.94 |
Share units vested | (66,485 | ) |  | $ | 79.06 |  |  | (75,404 | ) |  | $ | 88.24 |
Forfeited or canceled | (2,560 | ) |  | $ | 65.55 |  |  | (137,841 | ) |  | $ | 83.94 |
Outstanding as of January 25, 2020 | 174,917 |  |  | $ | 65.05 |  |  | 639,738 |  |  | $ | 62.60 |

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- Definition Tabular disclosure for share-based compensation plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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