Income Taxes	6 Months Ended
Jun. 30, 2015
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate was 32.5% in the second quarter of 2015 compared to 27.4% for the same period in 2014. Effective tax rates differ from statutory federal income tax rates, primarily due to the domestic manufacturing deduction, provisions for state and local income taxes and permanent tax differences. During the second quarter of 2014, the Company recognized incremental research and development tax credits of approximately $5.5 million as a result of amended tax return filings for calendar years 2010 through 2012 to claim incremental research and development tax credits.

Income Taxes

6 Months Ended

Jun. 30, 2015

The effective tax rate was 32.5% in the second quarter of 2015 compared to 27.4% for the same period in 2014. Effective tax rates differ from statutory federal income tax rates, primarily due to the domestic manufacturing deduction, provisions for state and local income taxes and permanent tax differences. During the second quarter of 2014, the Company recognized incremental research and development tax credits of approximately $5.5 million as a result of amended tax return filings for calendar years 2010 through 2012 to claim incremental research and development tax credits.