Income Taxes	6 Months Ended
Jun. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Provision for income taxes was approximately $13.9 million and $8.4 million for the three months ended June 30, 2016 and 2015, and $28.0 million and $18.4 million for the six months ended June 30, 2016 and 2015, respectively. The change in the provision was a result of an increase in profit before income taxes and the change in effective tax rate based on current geographical distribution of the earnings. 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. We have been selected for examination by the Internal Revenue Service ("IRS") for our 2013 and 2014 tax years. It is difficult to determine when the examinations will be settled or their final outcomes in the foreseeable future. We believe that we have adequately provided reserves for any reasonably foreseeable adjustment to our tax returns and we do not anticipate a significant impact to our gross unrecognized benefits within the next 12 months related to these years. Our gross unrecognized tax benefits as of June 30, 2016 were $23.5 million. If the gross unrecognized tax benefits as of June 30, 2016 were realized in future periods, this could result in a tax benefit of $14.7 million within our provision of income taxes. Because of the net operating loss and tax credit carryforwards, substantially all of our tax years remain open to tax examinations and we are unable to estimate the full range of possible adjustments to the balance of gross unrecognized tax benefits.

Income Taxes

6 Months Ended

Jun. 30, 2016

Provision for income taxes was approximately $13.9 million and $8.4 million for the three months ended June 30, 2016 and 2015, and $28.0 million and $18.4 million for the six months ended June 30, 2016 and 2015, respectively. The change in the provision was a result of an increase in profit before income taxes and the change in effective tax rate based on current geographical distribution of the earnings.

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.

We have been selected for examination by the Internal Revenue Service ("IRS") for our 2013 and 2014 tax years. It is difficult to determine when the examinations will be settled or their final outcomes in the foreseeable future. We believe that we have adequately provided reserves for any reasonably foreseeable adjustment to our tax returns and we do not anticipate a significant impact to our gross unrecognized benefits within the next 12 months related to these years.

Our gross unrecognized tax benefits as of June 30, 2016 were $23.5 million. If the gross unrecognized tax benefits as of June 30, 2016 were realized in future periods, this could result in a tax benefit of $14.7 million within our provision of income taxes. Because of the net operating loss and tax credit carryforwards, substantially all of our tax years remain open to tax examinations and we are unable to estimate the full range of possible adjustments to the balance of gross unrecognized tax benefits.