Income Taxes	3 Months Ended
Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate for the periods presented was primarily the result of income earned in the U.S., taxed at U.S. federal and state statutory income tax rates, income earned in foreign tax jurisdictions taxed at the applicable rates, as well as the impact of permanent differences between book and tax income. Our effective tax rate was 32.6% and 36.1% for the three months ended September 30, 2017 and 2016, respectively. Our effective tax rate decreased for the three months ended September 30, 2017 compared to the same period in 2016 due to discrete items, primarily related to lower interest expense on uncertain tax positions. During the three months ended September 30, 2017 and 2016, our income tax expense was driven primarily by pre-tax profitability in our domestic and foreign operations and the impact of permanent items. The permanent items are predominantly a U.S. domestic production activity deduction and tax credits for research expenditures, slightly offset by non-deductible stock-based compensation expense. During the three months ended September 30, 2017, we adopted ASU No. 2016-09. As a result of adopting the new standard, excess tax benefits from stock-based compensation are now reflected in the consolidated statements of operations as a component of the provision for income taxes, whereas they were previously a component of stockholders’ deficit. The adoption of ASU 2016-09 resulted in a decrease in our provision for income taxes of $0.5 million for the three months ended September 30, 2017. This represents a decrease in our effective tax rate of approximately 1.0 percentage point for the three months ended September 30, 2017, due to the recognition of excess tax benefits for options exercised and the vesting of equity awards. Deferred income taxes are recognized based on temporary differences between the financial statement and tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using the statutory tax rates and laws expected to apply to taxable income in the years in which the temporary differences are expected to reverse. Valuation allowances are provided against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the timing of the temporary differences becoming deductible. Management considers, among other available information, scheduled reversals of deferred tax liabilities, projected future taxable income, limitations of availability of net operating loss carryforwards, and other matters in making this assessment. We do not provide deferred taxes on unremitted earnings of foreign subsidiaries since we intend to indefinitely reinvest those earnings either currently or sometime in the foreseeable future. Unrecognized provisions for taxes on undistributed earnings of foreign subsidiaries, which are considered indefinitely reinvested, are not material to our consolidated financial position or results of operations.

Income Taxes

The effective tax rate for the periods presented was primarily the result of income earned in the U.S., taxed at U.S. federal and state statutory income tax rates, income earned in foreign tax jurisdictions taxed at the applicable rates, as well as the impact of permanent differences between book and tax income.

Our effective tax rate was 32.6% and 36.1% for the three months ended September 30, 2017 and 2016, respectively. Our effective tax rate decreased for the three months ended September 30, 2017 compared to the same period in 2016 due to discrete items, primarily related to lower interest expense on uncertain tax positions. During the three months ended September 30, 2017 and 2016, our income tax expense was driven primarily by pre-tax profitability in our domestic and foreign operations and the impact of permanent items. The permanent items are predominantly a U.S. domestic production activity deduction and tax credits for research expenditures, slightly offset by non-deductible stock-based compensation expense.

During the three months ended September 30, 2017, we adopted ASU No. 2016-09. As a result of adopting the new standard, excess tax benefits from stock-based compensation are now reflected in the consolidated statements of operations as a component of the provision for income taxes, whereas they were previously a component of stockholders’ deficit. The adoption of ASU 2016-09 resulted in a decrease in our provision for income taxes of $0.5 million for the three months ended September 30, 2017. This represents a decrease in our effective tax rate of approximately 1.0 percentage point for the three months ended September 30, 2017, due to the recognition of excess tax benefits for options exercised and the vesting of equity awards.

Deferred income taxes are recognized based on temporary differences between the financial statement and tax bases of assets and liabilities. Deferred tax assets and liabilities are measured using the statutory tax rates and laws expected to apply to taxable income in the years in which the temporary differences are expected to reverse. Valuation allowances are provided against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the timing of the temporary differences becoming deductible. Management considers, among other available information, scheduled reversals of deferred tax liabilities, projected future taxable income, limitations of availability of net operating loss carryforwards, and other matters in making this assessment.

We do not provide deferred taxes on unremitted earnings of foreign subsidiaries since we intend to indefinitely reinvest those earnings either currently or sometime in the foreseeable future. Unrecognized provisions for taxes on undistributed earnings of foreign subsidiaries, which are considered indefinitely reinvested, are not material to our consolidated financial position or results of operations.