Quarterly report pursuant to Section 13 or 15(d)

Income Taxes

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Income Taxes
3 Months Ended
Mar. 31, 2017
Income Tax Disclosure [Abstract]  
Income Taxes
Income Taxes

The Company or one of its subsidiaries files income tax returns in the U.S. federal jurisdiction, various states and Canada. With a few exceptions, the Company is no longer subject to U.S. federal, state and local, or Canadian examinations by tax authorities for years before 2010.

For the three months ended March 31, 2017 and 2016, the effective income tax rates varied from the statutory federal income tax rate of 35.0%, primarily as a result of the effect of state income taxes, net of the federal benefit, and permanent differences between book and tax net income. The combined federal and state effective tax rate for the three months ended March 31, 2017 was 37.8% compared to a rate of 37.1% for the same period in 2016.  The higher effective tax rate for the first quarter of 2017 is primarily the result of our implementation of new Financial Accounting Standards Board ("FASB") guidance that requires we recognize the income tax effects of awards when the awards vest or are settled. Previously any income tax effect was recognized in additional paid in capital. See further discussion in the "Impact of Recent Accounting Pronouncements" section of this document.