Income Taxes	3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Provision for income taxes was approximately $10.0 million and $7.1 million for the three months ended March 31, 2015 and 2014, respectively. The change in our provision for income taxes was primarily due to an increase in profit before income tax and the decrease in the effective tax rate based on our current geographical distribution of the earnings. The effective tax rate for the year ended December 31, 2014 included the impact of the reinstatement of the 2014 Research and Development ("R&D") tax credit as result of the passage of the Tax Increase Prevention Act of 2014. The impact of the 2014 federal R&D tax credit benefit was recorded in the fourth quarter of the year ended December 31, 2014. We operate in a number of tax jurisdictions and are subject to taxes in each country or jurisdiction in which we conduct business. As we expand internationally, our marginal tax rate may decrease; however, there can be no certainty that our marginal tax rate will decrease, and we may experience changes in tax rates that are not reflective of actual changes in our business or operations. Earnings from our non-U.S. activities are subject to local country income tax and may be subject to U.S. income tax. Generally, the U.S. tax obligation is reduced by a credit for foreign income taxes paid on these earnings avoiding double taxation. Our gross unrecognized tax benefits were $21.3 million as of March 31, 2015. If the gross unrecognized tax benefits as of March 31, 2015 were realized in future periods, this would result in a tax benefit of $15.8 million within our provision of income taxes. Because of the net operating loss and tax credit carryforward, substantially all of our tax years remain open to federal and state tax examination. However, it is possible that unrecognized tax benefits may decrease in the future as the statute of limitation lapses in some of the jurisdictions over the next 12 months.

Income Taxes

3 Months Ended

Mar. 31, 2015

Provision for income taxes was approximately $10.0 million and $7.1 million for the three months ended March 31, 2015 and 2014, respectively. The change in our provision for income taxes was primarily due to an increase in profit before income tax and the decrease in the effective tax rate based on our current geographical distribution of the earnings.

The effective tax rate for the year ended December 31, 2014 included the impact of the reinstatement of the 2014 Research and Development ("R&D") tax credit as result of the passage of the Tax Increase Prevention Act of 2014. The impact of the 2014 federal R&D tax credit benefit was recorded in the fourth quarter of the year ended December 31, 2014.

We operate in a number of tax jurisdictions and are subject to taxes in each country or jurisdiction in which we conduct business. As we expand internationally, our marginal tax rate may decrease; however, there can be no certainty that our marginal tax rate will decrease, and we may experience changes in tax rates that are not reflective of actual changes in our business or operations. Earnings from our non-U.S. activities are subject to local country income tax and may be subject to U.S. income tax. Generally, the U.S. tax obligation is reduced by a credit for foreign income taxes paid on these earnings avoiding double taxation.

Our gross unrecognized tax benefits were $21.3 million as of March 31, 2015. If the gross unrecognized tax benefits as of March 31, 2015 were realized in future periods, this would result in a tax benefit of $15.8 million within our provision of income taxes. Because of the net operating loss and tax credit carryforward, substantially all of our tax years remain open to federal and state tax examination. However, it is possible that unrecognized tax benefits may decrease in the future as the statute of limitation lapses in some of the jurisdictions over the next 12 months.