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Stock-Based Compensation (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2012 | Mar. 31, 2012
Options Activity and Information about Options Outstanding | The following table summarizes the share option activity during the three months ended June 30, 2012, and information about options outstanding at June 30, 2012:
|  | Number of Options |  |  | Weighted Average Exercise price |  |  | Weighted Average Remaining Contractual Life (years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at March 31, 2012 |  |  | 19,542,400 |  |  | $ | 6.59 |  |  |  |  |  |  |  |  |
Granted |  |  | 7,631 |  |  | $ | 38.37 |  |  |  |  |  |  |  |  |
Exercised |  |  | (491,444 | ) |  | $ | 5.21 |  |  |  |  |  |  |  |  |
Canceled/forfeited |  |  | (221,066 | ) |  | $ | 7.20 |  |  |  |  |  |  |  |  |
Outstanding at June 30, 2012 |  |  | 18,837,521 |  |  | $ | 6.63 |  |  |  | 7.60 |  |  | $ | 663,241 |
Vested or expected to vest at June 30, 2012 |  |  | 17,518,895 |  |  | $ | 6.63 |  |  |  | 7.60 |  |  |  |  |
Vested and exercisable at June 30, 2012 |  |  | 9,735,293 |  |  | $ | 3.31 |  |  |  | 6.75 |  |  | $ | 375,056 |
| The following table summarizes the share options activity during Fiscal 2012, and information about options outstanding at March 31, 2012:
|  | Number of Options |  |  | Weighted Average Exercise price |  |  | Weighted Average Remaining Contractual Live (years) |  |  | Aggregate Intrinsic Value (in thousands) |
Outstanding at April 2, 2011 |  |  | 19,414,315 |  |  | $ | 3.06 |  |  |  |  |  |  |  |  |
Granted |  |  | 5,256,780 |  |  | $ | 16.36 |  |  |  |  |  |  |  |  |
Redeemed* |  |  | (1,140,974 | ) |  | $ | 2.75 |  |  |  |  |  |  |  |  |
Exercised |  |  | (3,521,258 | ) |  | $ | 2.75 |  |  |  |  |  |  |  |  |
Canceled/forfeited |  |  | (466,463 | ) |  | $ | 8.16 |  |  |  |  |  |  |  |  |
Outstanding at March 31, 2012 |  |  | 19,542,400 |  |  | $ | 6.59 |  |  |  | 7.81 |  |  | $ | 781,689 |
Vested or expected to vest at March 31, 2012 |  |  | 18,174,432 |  |  | $ | 6.45 |  |  |  | 7.76 |  |  |  |  |
Vested and exercisable at March 31, 2012 |  |  | 6,047,975 |  |  | $ | 2.82 |  |  |  | 6.66 |  |  | $ | 264,741 |
* | The Company redeemed certain option grants during August 2011, for which it paid cash consideration of $10.7 million, representing the $12.12 share value established at the time of the private placement, less the exercise price of the option grants in the aggregate. The redemption was charged to selling, general and administrative expenses during the fiscal year ended March 31, 2012.
Assumptions Used to Estimate Fair Value of Options | The following table represents assumptions used to estimate the fair value of options:
|  | Three Months Ended |
|  | June 30, 2012 |  |  | July 2, 2011 |
Expected dividend yield |  |  | 0.0% |  |  |  | N/A |
Volatility factor |  |  | 50.2% |  |  |  | N/A |
Weighted average risk-free interest rate |  |  | 0.6% |  |  |  | N/A |
Expected life of option |  |  | 4.75 years |  |  |  | N/A |
| The following table represents assumptions used to estimate the fair value of options:
|  | Fiscal Year Ended
|  | March 31, 2012 |  | April 2, 2011 |  | April 3, 2010
Expected dividend yield |  | 0.0% |  | 0.0% |  | 0.0%
Volatility factor |  | 46.5% |  | 46.7% |  | 46.4%
Weighted average risk-free interest rate |  | 1.8% |  | 3.2% |  | 3.9%
Expected life of option |  | 7.8 years |  | 10 years |  | 10 years
Restricted Shares and Restricted Share Units | The following table summarizes restricted shares and restricted share units under the 2012 Plan as of June 30, 2012 and changes during the fiscal year then ended:
|  | Number of Unvested Restricted Shares/Units |  |  | Weighted Average Grant Date Fair Value |
Unvested at March 31, 2012 |  |  | 836,874 |  |  | $ | 22.53 |
Granted |  |  | 3,257 |  |  | $ | 38.38 |
Vested |  |  | — |  |  | $ | — |
Canceled/forfeited |  |  | — |  |  | $ | — |
Unvested at June 30, 2012 |  |  | 840,131 |  |  | $ | 22.52 |
| The following table summarizes restricted shares and restricted share units for the 2012 Plan as of March 31, 2012 and changes during the fiscal year then ended:
|  | Number of Unvested Restricted Shares/Units |  |  | Weighted Average Grant Date Fair Value |
Unvested at April 2, 2011 |  |  | — |  |  | $ | — |
Granted |  |  | 836,874 |  |  | $ | 22.53 |
Vested |  |  | — |  |  | $ | — |
Canceled/forfeited |  |  | — |  |  | $ | — |
Unvested at March 31, 2012 |  |  | 836,874 |  |  | $ | 22.53 |

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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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