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Share-Based Compensation (Tables) | 6 Months Ended
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Sep. 28, 2013
Options Activity and Information about Options Outstanding | The following table summarizes the share option activity during the six months ended September 28, 2013, and information about options outstanding at September 28, 2013:
|  | Number of Options |  |  | Weighted Average Exercise price |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at March 30, 2013 |  |  | 10,381,342 |  |  | $ | 9.21 |  |  |  |  |  |  |  |  |
Granted |  |  | 613,381 |  |  | $ | 62.46 |  |  |  |  |  |  |  |  |
Exercised |  |  | (2,144,008 | ) |  | $ | 6.08 |  |  |  |  |  |  |  |  |
Canceled/forfeited |  |  | (3,510 | ) |  | $ | 62.24 |  |  |  |  |  |  |  |  |
Outstanding at September 28, 2013 |  |  | 8,847,205 |  |  | $ | 13.64 |  |  |  | 6.64 |  |  | $ | 538,013 |
Vested or expected to vest at September 28, 2013 |  |  | 8,493,317 |  |  | $ | 13.64 |  |  |  | 6.64 |  |  |  |  |
Vested and exercisable at September 28, 2013 |  |  | 2,203,549 |  |  | $ | 7.12 |  |  |  | 6.21 |  |  | $ | 148,362 |
Assumptions Used to Estimate Fair Value of Options | The following table represents assumptions used to estimate the fair value of options:
|  | Three Months Ended |  |  | Six Months Ended |
|  | September 28, 2013 |  |  | September 29, 2012 |  |  | September 28, 2013 |  |  | September 29, 2012 |
Expected dividend yield |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | % |  |  | 0.0 | %
Volatility factor |  |  | 43.3 | % |  |  | 50.2 | % |  |  | 46.1 | % |  |  | 50.2 | %
Weighted average risk-free interest rate |  |  | 1.5 | % |  |  | 0.6 | % |  |  | 1.0 | % |  |  | 0.6 | %
Expected life of option |  |  | 4.75 years |  |  |  | 4.75 years |  |  |  | 4.75 years |  |  |  | 4.75 years |
Restricted Shares and Restricted Share Units | The following table summarizes restricted shares under the 2012 Plan as of September 28, 2013 and changes during the fiscal period then ended:
|  | Number of Unvested Restricted Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 30, 2013 |  |  | 617,468 |  |  | $ | 23.66 |
Granted |  |  | 249,921 |  |  | $ | 62.55 |
Vested |  |  | (888 | ) |  | $ | 38.75 |
Canceled/forfeited |  |  | (1,406 | ) |  | $ | 62.24 |
Unvested at September 28, 2013 |  |  | 865,095 |  |  | $ | 34.54 |
The following table summarizes restricted share units under the 2012 Plan as of September 28, 2013 and changes during the fiscal period then ended:
|  | Number of Unvested Restricted Units |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 30, 2013 |  |  | 27,763 |  |  | $ | 31.12 |
Granted |  |  | 174,002 |  |  | $ | 62.64 |
Vested |  |  | — |  |  | $ | — |
Canceled/forfeited |  |  | — |  |  | $ | — |
Unvested at September 28, 2013 |  |  | 201,765 |  |  | $ | 58.30 |

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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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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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