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Income Taxes | 9 Months Ended
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Sep. 30, 2014
Income Taxes |
Income Taxes | 5.Income Taxes Our income tax provision for the periods presented and the respective effective income tax rates for such periods are as follows (in thousands, except for income tax rates):
| For the Three Months ended |  | For the Nine Months ended |
| September 30, |  | September 30, |
| 2014 |  | 2013 |  | 2014 |  | 2013 |
Income tax provision | $ | 13,441 |  | $ | 8,191 |  | $ | 34,964 |  | $ | 32,090 |
Effective income tax rate |  | 19.8 | % |  | 14.0 | % |  | 18.8 | % |  | 17.3 | %
Our provision for income taxes for each of the three-month and nine-month periods ended September 30, 2014 and 2013 were calculated based on the estimated annual effective income tax rate for the full 2014 and 2013 fiscal years. The actual effective income tax rate for the full 2014 fiscal year may be materially different as a result of differences between estimated versus actual results and the geographic tax jurisdictions in which the results are earned as well as discrete items resulting from a lapse in the statute of limitations.

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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 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 Reference 2: 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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 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=6907707&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=6907707&loc=d3e32537-109319 Reference 6: 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=6907707&loc=d3e32559-109319 + Details
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