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Income Taxes
 9 Months Ended
Dec. 31, 2011
Income Taxes [Abstract]  
Income Taxes

8. Income Taxes

     The Company recorded income tax expense of less than $0.1 million and $1.2 million for the three and nine months ended December 31, 2011, respectively, and the Company recorded an income tax benefit of $2.5 million and income tax expense of $12.6 million for the three and nine months ended December 31, 2010, respectively. The Company has provided a valuation allowance against all net deferred tax assets as of December 31, 2011, as it is more likely than not that its net deferred tax assets are not currently realizable due to the net operating losses incurred by the Company since its inception in the U.S., its significant write-offs in the fiscal year ended March 31, 2011 and the losses that are forecasted in certain foreign jurisdictions in the future.

     During the nine months ended December 31, 2011, the Company recorded additional income tax expense of $0.8 million for uncertain tax positions related to its Austrian subsidiary.