Income Taxes	9 Months Ended
Jan. 31, 2015
Income Taxes [Abstract]
Income Taxes	8.Income Taxes We recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. We are subject to income taxes in the U.S. federal jurisdiction, various states and foreign jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. In general, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for the fiscal years before 2008. We do not believe there will be any material changes in our unrecognized tax positions over the next 12 months. Therefore, no reserves for uncertain income tax positions have been recorded. Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. As of January 31, 2015 and April 30, 2014, we did not have any accrued interest or penalties associated with unrecognized tax benefits, nor did we record interest expense associated with unrecognized tax benefits in the nine months ended January 31, 2015 and 2014.

Income Taxes

9 Months Ended

Jan. 31, 2015

8.Income Taxes

We recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority.

We are subject to income taxes in the U.S. federal jurisdiction, various states and foreign jurisdictions. Tax regulations within each jurisdiction are subject to the interpretation of the related tax laws and regulations and require significant judgment to apply. In general, we are no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for the fiscal years before 2008. We do not believe there will be any material changes in our unrecognized tax positions over the next 12 months. Therefore, no reserves for uncertain income tax positions have been recorded.

Our policy is to recognize interest and penalties accrued on any unrecognized tax benefits as a component of income tax expense. As of January 31, 2015 and April 30, 2014, we did not have any accrued interest or penalties associated with unrecognized tax benefits, nor did we record interest expense associated with unrecognized tax benefits in the nine months ended January 31, 2015 and 2014.