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Income Taxes | 9 Months Ended
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Sep. 30, 2017
Income Tax Disclosure [Abstract] |
Income Taxes | INCOME TAXES A reconciliation of the U.S. federal statutory rate to our effective tax rate is as follows:
| For the Three Months Ended September 30, |  | For the Nine Months Ended September 30,
| 2017 |  | 2016 |  | 2017 |  | 2016
U.S. federal statutory rate | 35.0 | % |  | 35.0 | % |  | 35.0 | % |  | 35.0 | %
State income taxes | 1.9 | % |  | 1.7 | % |  | 1.8 | % |  | 1.8 | %
Excess tax benefits from stock-based compensation plans | — | % |  | — | % |  | -0.5 | % |  | — | %
Other | 0.2 | % |  | 0.4 | % |  | 0.2 | % |  | 0.3 | %
Effective tax rate | 37.1 | % |  | 37.1 | % |  | 36.5 | % |  | 37.1 | %
The differences between the U.S. federal statutory rate and our effective tax rate are primarily due to state income taxes and excess tax benefits from stock-based compensation plans. The decrease in the effective tax rate for the nine months ended September 30, 2017 is primarily due to the adoption of ASU 2016-09 on January 1, 2017, which changed where we recognize excess tax benefits and deficiencies from stock-based compensation plans in our consolidated financial statements on a prospective basis. We receive a tax deduction upon the vesting of restricted stock and the conversion of restricted stock units to common stock based on the fair value of the shares. The amount that this tax deduction differs from the grant-date fair value that was recognized as stock-based compensation expense is referred to as an excess tax benefit or deficiency. For the nine months ended September 30, 2017, excess tax benefits of $2.5 million were recognized in provision for income taxes, thus reducing our effective tax rate. For the nine months ended September 30, 2016, excess tax benefits of $27.2 million were recognized in paid-in capital in our consolidated balance sheets, which had no impact on our effective tax rate.

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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