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Stock-Based Awards | 6 Months Ended
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Jan. 28, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Awards | Stock-Based Awards The Company has certain stock-based compensation plans under which it grants stock-based awards, including stock options, restricted share units, and performance share units to attract, retain, and reward talented employees, officers and directors, and to align stockholder and employee interests. Compensation expense for stock-based awards is based on fair value at the measurement date and fluctuates over time as a result of the vesting period of the stock-based awards and the Company’s performance, as measured by criteria set forth in the performance-based awards. This expense is included in general and administrative expenses in the condensed consolidated statements of operations and the amount of expense ultimately recognized depends on the number of awards that actually vest. Accordingly, stock-based compensation expense may vary from fiscal year to fiscal year. The performance criteria for target awards are based on the Company’s fiscal year operating earnings (adjusted for certain amounts) as a percentage of contract revenues and its fiscal year operating cash flow level. Additionally, certain awards include three-year performance goals that, if met, result in supplemental shares awarded. For performance-based restricted share units (“Performance RSUs”), the Company evaluates compensation expense quarterly and recognizes expense for performance-based awards only if it determines it is probable that performance criteria for the awards will be met. In the event the Company determines it is no longer probable that it will achieve certain performance criteria for the awards, it would reverse the associated stock-based compensation expense that it had previously recognized in the period such determination is made. Stock-based compensation expense and the related tax benefit during the three and six months ended January 28, 2017 and January 23, 2016 were as follows (dollars in thousands):
| For the Three Months Ended |  | For the Six Months Ended
| January 28, 2017 |  | January 23, 2016 |  | January 28, 2017 |  | January 23, 2016
Stock-based compensation | $ | 5,309 |  |  | $ | 4,200 |  |  | $ | 11,015 |  |  | $ | 8,708 |
Related tax benefit for stock-based compensation | $ | 2,000 |  |  | $ | 1,613 |  |  | $ | 4,183 |  |  | $ | 3,342 |
As of January 28, 2017, the Company had unrecognized compensation expense related to stock options, time-based restricted share units (“RSUs”), and target Performance RSUs (based on the Company’s estimate of performance goal achievement) of $3.6 million, $10.5 million, and $24.1 million, respectively. This expense will be recognized over a weighted-average number of years of 2.9, 2.9, and 2.2, respectively, based on the average remaining service periods for the awards. As of January 28, 2017, the Company may recognize an additional $8.2 million in compensation expense in future periods if the maximum amount of Performance RSUs is earned based on certain performance measures being met. Stock Options The following table summarizes stock option award activity during the six months ended January 28, 2017:
| Stock Options
| Shares |  | Weighted Average Exercise Price
Outstanding as of July 30, 2016 | 737,267 |  |  | $ | 20.99 |
Granted | 36,914 |  |  | $ | 78.46 |
Options exercised | (48,543 | ) |  | $ | 10.06 |
Canceled | (1,000 | ) |  | $ | 6.83 |
Outstanding as of January 28, 2017 | 724,638 |  |  | $ | 24.67 |
Exercisable options as of January 28, 2017 | 593,666 |  |  | $ | 18.28 |
RSUs and Performance RSUs The following table summarizes RSU and Performance RSU award activity during the six months ended January 28, 2017:
| Restricted Stock
| RSUs |  | Performance RSUs
| Share Units |  | Weighted Average Grant Price |  | Share Units |  | Weighted Average Grant Price
Outstanding as of July 30, 2016 | 251,264 |  |  | $ | 42.56 |  |  | 625,971 |  |  | $ | 47.66 |
Granted | 60,485 |  |  | $ | 77.76 |  |  | 274,282 |  |  | $ | 79.29 |
Share units vested | (107,447 | ) |  | $ | 35.20 |  |  | (287,593 | ) |  | $ | 40.53 |
Forfeited or canceled | (1,223 | ) |  | $ | 29.84 |  |  | (53,129 | ) |  | $ | 41.18 |
Outstanding as of January 28, 2017 | 203,079 |  |  | $ | 57.01 |  |  | 559,531 |  |  | $ | 67.44 |
The total amount of granted Performance RSUs presented above consists of 198,140 target shares and 76,142 supplemental shares. During the six months ended January 28, 2017, the Company canceled 49,797 supplemental shares of Performance RSUs outstanding as of July 30, 2016, as a result of the fiscal 2016 performance criteria for attaining those supplemental shares not being met. The total amount of Performance RSUs outstanding as of January 28, 2017 consists of 418,939 target shares and 140,592 supplemental shares.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 + Details
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