Income Taxes	9 Months Ended
Aug. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Our income tax provision for the third quarter of fiscal year 2015 and 2014 reflects our estimates of the effective tax rates expected to be applicable for the full fiscal years, adjusted for any discrete events which are recorded in the period they occur. The estimates are reevaluated each quarter based on our estimated tax expense for the full fiscal year. The increase in our effective tax rate in the three and nine months ended August 31, 2015 compared to the same periods in the prior year is primarily due to the jurisdictional mix of profits as a result of the acquisition of Telerik, where substantial losses are being incurred in Bulgaria and tax effected at a 10% statutory rate and other jurisdictions’ earnings, primarily in the United States, are being taxed at higher rates. The research and development credit was retroactively reinstated in December 2014. As a result, in the first quarter of fiscal year 2015 we recorded a tax benefit of $0.8 million related to qualifying research and development activities for the period from January 2014 to November 2014. Our Federal income tax returns have been examined or are closed by statute for all years prior to fiscal year 2012, and we are no longer subject to audit for those periods. Our state income tax returns have been examined or are closed by statute for all years prior to fiscal year 2010, and we are no longer subject to audit for those periods.

Income Taxes

9 Months Ended

Aug. 31, 2015

Our income tax provision for the third quarter of fiscal year 2015 and 2014 reflects our estimates of the effective tax rates expected to be applicable for the full fiscal years, adjusted for any discrete events which are recorded in the period they occur. The estimates are reevaluated each quarter based on our estimated tax expense for the full fiscal year.

The increase in our effective tax rate in the three and nine months ended August 31, 2015 compared to the same periods in the prior year is primarily due to the jurisdictional mix of profits as a result of the acquisition of Telerik, where substantial losses are being incurred in Bulgaria and tax effected at a 10% statutory rate and other jurisdictions’ earnings, primarily in the United States, are being taxed at higher rates.

The research and development credit was retroactively reinstated in December 2014. As a result, in the first quarter of fiscal year 2015 we recorded a tax benefit of $0.8 million related to qualifying research and development activities for the period from January 2014 to November 2014.

Our Federal income tax returns have been examined or are closed by statute for all years prior to fiscal year 2012, and we are no longer subject to audit for those periods. Our state income tax returns have been examined or are closed by statute for all years prior to fiscal year 2010, and we are no longer subject to audit for those periods.