Income Taxes	3 Months Ended
Mar. 31, 2016
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income tax expense for each of the three months ended March 31, 2016 and 2015 was $6.2 million, or 36.5% of pre-tax income, and $5.0 million, or 37.5% of pre-tax income, respectively. The Company’s estimated annual 2016 effective tax rate is approximately 36.0%. This differs from the U.S. federal statutory rate of 35% due principally to items such as state and local income taxes, the federal domestic activities deduction and state income tax credits. The Indian Employment Credit and Research and Development Credit were not extended until December 2015 for the 2015 and 2016 tax years. As such, the effective rate for the three months ended March 31,2016 is reduced for the impact of these credits while the effective rate for the three months ended March 31,2015 does not reflect these credits. We file income tax returns in the U.S., state and foreign income tax returns jurisdictions. We are subject to U.S. examinations for tax years 2012 to present, and to non-U.S. income tax examinations for the tax years of 2011 to present. In addition, we are subject to state and local income tax examinations for the tax years 2011 to present. The Company continues to evaluate its need to file returns in various state jurisdictions. Any interest or penalties would be recognized as a component of income tax expense. In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Taxes, which requires presentation of deferred tax assets and liabilities as non-current in a classified balance sheet. The ASU becomes effective in the annual reporting period beginning after December 31, 2016, including interim reporting periods. Early adoption is allowed as of the beginning of any interim or annual reporting period. The standard permits the use of the retrospective or prospective transition method. We early adopted the standard effective October 1, 2015, and have applied the retrospective transition method. There are no prior period quantitative effects on the consolidated statements of income, stockholders' equity or cash flows.

Income Taxes

3 Months Ended

Mar. 31, 2016

Income tax expense for each of the three months ended March 31, 2016 and 2015 was $6.2 million, or 36.5% of pre-tax income, and $5.0 million, or 37.5% of pre-tax income, respectively. The Company’s estimated annual 2016 effective tax rate is approximately 36.0%. This differs from the U.S. federal statutory rate of 35% due principally to items such as state and local income taxes, the federal domestic activities deduction and state income tax credits. The Indian Employment Credit and Research and Development Credit were not extended until December 2015 for the 2015 and 2016 tax years. As such, the effective rate for the three months ended March 31,2016 is reduced for the impact of these credits while the effective rate for the three months ended March 31,2015 does not reflect these credits.

We file income tax returns in the U.S., state and foreign income tax returns jurisdictions. We are subject to U.S. examinations for tax years 2012 to present, and to non-U.S. income tax examinations for the tax years of 2011 to present. In addition, we are subject to state and local income tax examinations for the tax years 2011 to present. The Company continues to evaluate its need to file returns in various state jurisdictions. Any interest or penalties would be recognized as a component of income tax expense.

In November 2015, the FASB issued ASU 2015-17, Balance Sheet Classification of Taxes, which requires presentation of deferred tax assets and liabilities as non-current in a classified balance sheet. The ASU becomes effective in the annual reporting period beginning after December 31, 2016, including interim reporting periods. Early adoption is allowed as of the beginning of any interim or annual reporting period. The standard permits the use of the retrospective or prospective transition method. We early adopted the standard effective October 1, 2015, and have applied the retrospective transition method.

There are no prior period quantitative effects on the consolidated statements of income, stockholders' equity or cash flows.