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Summary Of Significant Accounting Policies (Tables) | 12 Months Ended
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Mar. 31, 2012
Summary Of Significant Accounting Policies [Abstract] |
Estimated Useful Life Of Property, Plant And Equipment |
Asset classification | Estimated useful life in years
Building | 40
Process upgrades to the building | 10-40
Machinery and equipment | 3-10
Furniture and fixtures | 3-5
Leasehold improvements | Shorter of the estimated useful life or the remaining lease term
Reconciliation Of Numerators And Denominators Of EPS Calculation |
|  | Year ended March 31, |  |
|  | 2012 |  |  | 2011 |  |  | 2010 |
Numerator: |  |  |  |  |  |  |  |  |
Net (loss) income | $ | (136,827 | ) | $ | (186,284 | ) | $ | 16,248 |
Denominator: |  |  |  |  |  |  |  |  |
Weighted-average shares of common stock outstanding |  | 51,144 |  |  | 47,750 |  |  | 44,493 |
Weighted-average shares subject to repurchase |  | (302 | ) |  | (647 | ) |  | (48 | )
Shares used in per-share calculation basic |  | 50,842 |  |  | 47,103 |  |  | 44,445 |
Dilutive effect of employee equity incentive plans |  | - |  |  | - |  |  | 845 |
Shares used in per-share calculation diluted |  | 50,842 |  |  | 47,103 |  |  | 45,290 |
Net (loss) income per share basic | $ | (2.69 | ) | $ | (3.95 | ) | $ | 0.37 |
Net (loss) income per share diluted | $ | (2.69 | ) | $ | (3.95 | ) | $ | 0.36 |

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- Definition Tabular disclosure of the numerators and the denominators of the basic and diluted per-share (or per-unit) computations for income from continuing operations, including the effect that has been given to preferred dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 260 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (a) -Name Accounting Standards Codification -Paragraph 1 -Section 50 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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