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Income Taxes
3 Months Ended
Mar. 31, 2015
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes

The Company’s tax provision for interim periods is determined using an estimate of its annual effective income tax rate, adjusted for discrete items, if any, that are taken into account in the relevant period. Each quarter, the Company updates the estimated annual effective income tax rate, and if the estimated income tax rate changes, a cumulative adjustment is made.

The effective tax rate for the first three months of 2015 and 2014 was 36.6% and 35.2%, respectively. The Company recognizes accrued interest and penalties related to unrecognized tax benefits in income tax expense.