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Equity Compensation (Schedule Of Fair Value Of Stock Option Grants) (Details)
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12 Months Ended | ||
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Mar. 31, 2012
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Mar. 26, 2011
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Mar. 27, 2010
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Maximum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Expected stock price volatility | 66.11% | 67.11% | 56.59% |
| Risk-free interest rate | 1.43% | 2.06% | 2.25% |
| Expected term (in years) | 3 years 9 months 26 days | 4 years 4 months 2 days | 4 years 7 months 21 days |
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Minimum [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Expected stock price volatility | 59.25% | 52.03% | 50.71% |
| Risk-free interest rate | 0.27% | 1.19% | 1.80% |
| Expected term (in years) | 2 years 3 months 26 days | 3 years 9 months 29 days | 4 years 3 months 29 days |