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Share Based Compensation (Tables) | 12 Months Ended
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Mar. 31, 2012
Share Based Compensation [Abstract] |
Summary of changes in outstanding stock options |
|  | Weighted Average Exercise Price |  |  | Options Outstanding |
At March 28, 2009 |  | $ | 11.41 |  |  |  | 3,085,590 |
Granted |  | $ | 17.89 |  |  |  | 255,420 |
Exercised |  | $ | 9.25 |  |  |  | (970,721 | )
Canceled |  | $ | 14.99 |  |  |  | (27,841 | )
At March 27, 2010 |  | $ | 12.96 |  |  |  | 2,342,448 |
Granted |  | $ | 31.51 |  |  |  | 788,027 |
Exercised |  | $ | 9.97 |  |  |  | (569,063 | )
Canceled |  | $ | 18.22 |  |  |  | (35,734 | )
At March 26, 2011 |  | $ | 19.35 |  |  |  | 2,525,678 |
Granted |  | $ | 32.86 |  |  |  | 173,075 |
Exercised |  | $ | 14.47 |  |  |  | (816,594 | )
Canceled |  | $ | 21.10 |  |  |  | (30,571 | )
At March 31, 2012 |  | $ | 22.75 |  |  |  | 1,851,588 |
A summary of the status of and changes in non-vested stock options granted |
|  | Options |  |  | Weighted Average Grant-Date Fair Value (per Option) |
Non-vested at March 28, 2009 |  |  | 841,638 |  |  | $ | 4.21 |
Granted |  |  | 255,420 |  |  | $ | 5.38 |
Vested |  |  | (406,872 | ) |  | $ | 4.37 |
Canceled |  |  | (19,688 | ) |  | $ | 4.78 |
Non-vested at March 27, 2010 |  |  | 670,498 |  |  | $ | 4.49 |
Granted |  |  | 788,027 |  |  | $ | 8.58 |
Vested |  |  | (497,655 | ) |  | $ | 4.73 |
Canceled |  |  | (30,831 | ) |  | $ | 5.57 |
Non-vested at March 26, 2011 |  |  | 930,039 |  |  | $ | 7.83 |
Granted |  |  | 173,075 |  |  | $ | 8.41 |
Vested |  |  | (357,697 | ) |  | $ | 7.54 |
Canceled |  |  | (23,342 | ) |  | $ | 6.62 |
Non-vested at March 31, 2012 |  |  | 722,075 |  |  | $ | 8.16 |
Summarizes information about fixed stock options outstanding |
|  | Options Outstanding |  |  | Options Exercisable |
Range of Exercise Prices |  | Shares Under Option |  |  | Weighted Average Remaining Life |  |  | Weighted Average Exercise Price |  |  | Shares Under Option |  |  | Weighted Average Exercise Price |
$ 5.29 - $12.11 |  |  | 456,558 |  |  |  | 1.95 |  |  | $ | 10.73 |  |  |  | 430,703 |  |  | $ | 10.67 |
$12.12 - $18.05 |  |  | 475,515 |  |  |  | 4.44 |  |  | $ | 16.36 |  |  |  | 399,618 |  |  | $ | 16.04 |
$18.06 - $33.62 |  |  | 483,015 |  |  |  | 4.15 |  |  | $ | 28.97 |  |  |  | 138,817 |  |  | $ | 28.06 |
$33.63 - $44.59 |  |  | 436,500 |  |  |  | 3.89 |  |  | $ | 35.39 |  |  |  | 160,375 |  |  | $ | 35.42 |

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph 64 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph f -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: 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 + 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 -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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