Income taxes	9 Months Ended
Dec. 31, 2015
Income Tax Disclosure [Abstract]
Income taxes	Income taxes The Company's income tax for the three months ended December 31, 2015 and December 31, 2014 was $4.5 million and $1.2 million, respectively. The Company's income tax expense for the nine months ended December 31, 2015 and December 31, 2014 was $6.7 million and $5.1 million, respectively. The increases in income tax expense are primarily due to the mixture of income generated by the Company in foreign jurisdictions with differing withholding and income tax rates. Accounting for income taxes for interim periods generally requires the provision for income taxes to be determined by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pretax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period unless the Company is unable to estimate its annual effective tax rate with reasonable accuracy. The Company has used a discrete effective tax rate method to calculate taxes for the fiscal three and nine month periods ended December 31, 2015. The Company determined that since small changes in estimated “ordinary” income would result in significant changes in the estimated annual effective tax rate, the method of applying an estimate of the annual effective tax rate for the full year to the year to date “ordinary” income would not provide a reliable estimate for the fiscal three and nine month periods ended December 31, 2015. The Company has net operating losses that may potentially be offset against future domestic earnings. The Company files federal income tax returns and also files income tax returns in various state and foreign jurisdictions. Due to the net operating loss carryforwards, the Company's United States federal and state returns are open to examination by the Internal Revenue Service and state jurisdictions for all years since inception. During the quarter ended September 30, 2015, the Company changed its indefinite reinvestment position with respect to earnings generated in its Chinese subsidiary. The Company intends to repatriate substantially all of its earnings from this subsidiary in the future. During fiscal 2016, the Company intends to repatriate approximately $16.4 million of earnings from China to the United States. The Company has recorded the US income tax and foreign withholding taxes related to the excess of the financial reporting basis over the tax basis of its investment in its China subsidiary. The Company continues to assert that all earnings and profits for its remaining foreign subsidiaries are indefinitely reinvested. Accordingly, the Company has not recorded U.S. income or foreign withholding taxes with respect to the excess of the financial reporting basis over the tax basis in its investment in these foreign subsidiaries. As of December 31, 2015, the Company has determined, based on the weight of the available evidence, both positive and negative, to provide for a valuation allowance against substantially all of the net deferred tax assets. The current deferred tax assets not reserved for by the valuation allowance are those in foreign jurisdictions or amounts that may be carried back in future years. If there is a change in circumstances that causes a change in judgment about the realizability of the deferred tax assets, the Company will adjust all or a portion of the applicable valuation allowance in the period when such change occurs.

Income taxes

The Company's income tax for the three months ended December 31, 2015 and December 31, 2014 was $4.5 million and $1.2 million, respectively. The Company's income tax expense for the nine months ended December 31, 2015 and December 31, 2014 was $6.7 million and $5.1 million, respectively. The increases in income tax expense are primarily due to the mixture of income generated by the Company in foreign jurisdictions with differing withholding and income tax rates. Accounting for income taxes for interim periods generally requires the provision for income taxes to be determined by applying an estimate of the annual effective tax rate for the full fiscal year to “ordinary” income or loss (pretax income or loss excluding unusual or infrequently occurring discrete items) for the reporting period unless the Company is unable to estimate its annual effective tax rate with reasonable accuracy. The Company has used a discrete effective tax rate method to calculate taxes for the fiscal three and nine month periods ended December 31, 2015. The Company determined that since small changes in estimated “ordinary” income would result in significant changes in the estimated annual effective tax rate, the method of applying an estimate of the annual effective tax rate for the full year to the year to date “ordinary” income would not provide a reliable estimate for the fiscal three and nine month periods ended December 31, 2015. The Company has net operating losses that may potentially be offset against future domestic earnings. The Company files federal income tax returns and also files income tax returns in various state and foreign jurisdictions. Due to the net operating loss carryforwards, the Company's United States federal and state returns are open to examination by the Internal Revenue Service and state jurisdictions for all years since inception.

During the quarter ended September 30, 2015, the Company changed its indefinite reinvestment position with respect to earnings generated in its Chinese subsidiary. The Company intends to repatriate substantially all of its earnings from this subsidiary in the future. During fiscal 2016, the Company intends to repatriate approximately $16.4 million of earnings from China to the United States. The Company has recorded the US income tax and foreign withholding taxes related to the excess of the financial reporting basis over the tax basis of its investment in its China subsidiary. The Company continues to assert that all earnings and profits for its remaining foreign subsidiaries are indefinitely reinvested. Accordingly, the Company has not recorded U.S. income or foreign withholding taxes with respect to the excess of the financial reporting basis over the tax basis in its investment in these foreign subsidiaries.

As of December 31, 2015, the Company has determined, based on the weight of the available evidence, both positive and negative, to provide for a valuation allowance against substantially all of the net deferred tax assets. The current deferred tax assets not reserved for by the valuation allowance are those in foreign jurisdictions or amounts that may be carried back in future years. If there is a change in circumstances that causes a change in judgment about the realizability of the deferred tax assets, the Company will adjust all or a portion of the applicable valuation allowance in the period when such change occurs.