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Income Taxes | 6 Months Ended
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Jun. 30, 2016
Income Taxes |
Income Taxes | 8.Income Taxes Our income tax provision for the periods presented and the respective effective income tax rates for such periods are as follows (in millions, except for income tax rates):
| For the Three Months ended |  | For the Six Months ended
| June 30, |  | June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Income tax provision | $ | 7.1 |  | $ | 4.6 |  | $ | 10.3 |  | $ | 15.9 |
Effective income tax rate |  | 19.4 | % |  | 13.7 | % |  | 11.2 | % |  | 16.9 | %
Our provision for income taxes for each of the three-month and six-month periods ended June 30, 2016 and 2015 was calculated based on the estimated annual effective income tax rate for the full 2016 and 2015 fiscal years. Our provision for income taxes for the second quarter of 2016 was adjusted for an income tax expense of $2.4 million, net, for discrete items related to changes in estimates in uncertain tax positions. Without the $2.4 million adjustment, the three-month period ended June 30, 2016 effective income tax rate would have been 12.8%. Our provision for income taxes for the six months ended June 30, 2016 was adjusted for an income tax benefit of $1.6 million, net, for discrete items related to changes in estimates in uncertain tax positions. Without the $1.6 million adjustment, the six month period ended June 30, 2016 effective income tax rate would have been 13.0%. The actual effective income tax rate for the full 2016 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. We operated under a special income tax concession in Singapore which began January 1, 2008. Our current five year special income tax concession was effective January 1, 2013. The special income tax concession is conditional upon our meeting of certain employment and investment thresholds which, if not met in accordance with our agreement, may eliminate the benefit beginning with the first year in which the conditions are not satisfied. The income tax concession reduces the income tax rate on qualified sales and the impact of this income tax concession decreased foreign income taxes by $1.2 million and $0.4 million for the three months ended June 30, 2016 and 2015, respectively, and by $1.8 million and $2.7 million for the six months ended June 30, 2016 and 2015, respectively. The impact of the income tax concession on basic earnings per common share was $0.02 and $0.01 for the three months ended June 30, 2016 and 2015, respectively, and $0.03 and $0.04 for the six months ended June 30, 2016 and 2015 respectively. On a diluted earnings per common share basis, the impact was $0.02 and $0.01 for the three months ended June 30, 2016 and 2015, respectively, and $0.03 and $0.04 for the six months ended June 30, 2016 and 2015, respectively.

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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=6907707&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=6907707&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=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 + Details
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