Income Taxes	9 Months Ended
Dec. 31, 2011
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Text Block]	Income Taxes We evaluate our deferred tax assets on a regular basis to determine if a valuation allowance is required. A cumulative taxable loss in recent years is significant negative evidence in considering whether deferred tax assets are realizable. As we have had U.S. tax losses in recent years, we can no longer rely on common tax planning strategies to use our U.S. tax losses and we are precluded from relying on projections of future taxable income to support the recognition of deferred tax assets. As such, the ultimate realization of deferred tax assets is dependent upon the existence of sufficient taxable income generated in the carryforward periods. Our income tax expense for the three and nine months ended December 31, 2011 and December 31, 2010 was $2.5 million and $1.6 million, and $0.1 million and $1.6 million, respectively. These amounts represent effective tax rates for the three and nine months ended December 31, 2011 and December 31, 2010 of 4.6% and 0.9% (provision on a loss), and 0.4% and 1.7% (provision on a loss), respectively. The rates differ from the U.S. federal statutory rate of 35% primarily due to the fact that our domestic and certain foreign net operating losses are fully valued. Our unrecognized tax benefits increased by $0.4 million in the nine months ended December 31, 2011, from $3.4 million at March 31, 2011 to $3.8 million at December 31, 2011, of which $3.7 million would impact our effective tax rate if recognized. Due to inherent uncertainty we are not able to determine the timing and recognition of our unrecognized tax benefits. Additionally, due to the valuation of our deferred tax assets, any benefit recognized would not be realized in our effective tax rate for at least the next 12 months. We conduct business internationally and, as a result, one or more of our subsidiaries files income tax returns in U.S. Federal, U.S. state, and certain foreign jurisdictions. Accordingly, we are subject to examination by taxing authorities throughout the world, including Australia, China, France, Germany, Italy, Japan, Korea, Luxembourg, Netherlands, Spain, Switzerland, and the United Kingdom. Certain state and certain non-U.S. income tax returns are currently under various stages of audit or potential audit by applicable tax authorities and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. In October 2011, we received notification that our German tax audit for fiscal years 2005-2009 concluded with no significant adjustments. We are no longer subject to U.S. Federal, U.S. state, and local or foreign jurisdiction income tax examinations by tax authorities for years prior to March 31, 2007. At December 31, 2011, approximately 45% of our cash and cash equivalents were domiciled in foreign tax jurisdictions. In the event we repatriate all or a portion of these funds to the United States, we may be required pay additional taxes (such as foreign withholdings) in certain foreign jurisdictions, which we do not expect to be significant. We do not anticipate that such repatriation, in the short-term, would result in actual cash payments in the United States, as the taxable event would likely be offset by the utilization of our net operating losses and tax credits. Our policy is to recognize interest and penalty expense, if any, related to uncertain tax positions as a component of income tax expense. As of December 31, 2011, we had no amounts accrued for interest and for the potential payment of penalties.

Income Taxes

We evaluate our deferred tax assets on a regular basis to determine if a valuation allowance is required. A cumulative taxable loss in recent years is significant negative evidence in considering whether deferred tax assets are realizable. As we have had U.S. tax losses in recent years, we can no longer rely on common tax planning strategies to use our U.S. tax losses and we are precluded from relying on projections of future taxable income to support the recognition of deferred tax assets. As such, the ultimate realization of deferred tax assets is dependent upon the existence of sufficient taxable income generated in the carryforward periods.

Our income tax expense for the three and nine months ended December 31, 2011 and December 31, 2010 was $2.5 million and $1.6 million, and $0.1 million and $1.6 million, respectively. These amounts represent effective tax rates for the three and nine months ended December 31, 2011 and December 31, 2010 of 4.6% and 0.9% (provision on a loss), and 0.4% and 1.7% (provision on a loss), respectively. The rates differ from the U.S. federal statutory rate of 35% primarily due to the fact that our domestic and certain foreign net operating losses are fully valued.

Our unrecognized tax benefits increased by $0.4 million in the nine months ended December 31, 2011, from $3.4 million at March 31, 2011 to $3.8 million at December 31, 2011, of which $3.7 million would impact our effective tax rate if recognized. Due to inherent uncertainty we are not able to determine the timing and recognition of our unrecognized tax benefits. Additionally, due to the valuation of our deferred tax assets, any benefit recognized would not be realized in our effective tax rate for at least the next 12 months.

We conduct business internationally and, as a result, one or more of our subsidiaries files income tax returns in U.S. Federal, U.S. state, and certain foreign jurisdictions. Accordingly, we are subject to examination by taxing authorities throughout the world, including Australia, China, France, Germany, Italy, Japan, Korea, Luxembourg, Netherlands, Spain, Switzerland, and the United Kingdom. Certain state and certain non-U.S. income tax returns are currently under various stages of audit or potential audit by applicable tax authorities and the amounts ultimately paid, if any, upon resolution of the issues raised by the taxing authorities may differ materially from the amounts accrued for each year. In October 2011, we received notification that our German tax audit for fiscal years 2005-2009 concluded with no significant adjustments. We are no longer subject to U.S. Federal, U.S. state, and local or foreign jurisdiction income tax examinations by tax authorities for years prior to March 31, 2007.

At December 31, 2011, approximately 45% of our cash and cash equivalents were domiciled in foreign tax jurisdictions. In the event we repatriate all or a portion of these funds to the United States, we may be required pay additional taxes (such as foreign withholdings) in certain foreign jurisdictions, which we do not expect to be significant. We do not anticipate that such repatriation, in the short-term, would result in actual cash payments in the United States, as the taxable event would likely be offset by the utilization of our net operating losses and tax credits.

Our policy is to recognize interest and penalty expense, if any, related to uncertain tax positions as a component of income tax expense. As of December 31, 2011, we had no amounts accrued for interest and for the potential payment of penalties.