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Earnings per Share | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Earnings per Share |
7. | Earnings per Share
Basic earnings per share is computed by dividing net earnings attributable to shareholders by the weighted average number of shares of common stock and vested deferred stock units outstanding during the year. The computation of diluted earnings per share is similar to the computation of basic earnings per share, except that the denominator is increased for the assumed exercise of dilutive options and assumed issuance of unvested restricted stock units and deferred stock units and unvested performance-based restricted stock units for which the performance condition has been met as of the date of determination using the treasury stock method unless the effect is anti-dilutive. The treasury stock method assumes that proceeds, including cash received from the exercise of employee stock options, the total unrecognized compensation expense for unvested share-based compensation awards and the excess tax benefits resulting from share-based compensation tax deductions in excess of the related expense recognized for financial reporting purposes, would be used to purchase the Company's common stock at the average market price during the period. The following is a reconciliation of the income and share data used in the basic and diluted earnings per share computations for the three and nine months ended September 30, 2016 and 2015:
| Three months ended September 30, |  | Nine months ended September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Net earnings attributable to shareholders – Basic and Diluted | $ | 19,696 |  |  | $ | 32,166 |  |  | $ | 55,350 |  |  | $ | 81,003 |
Weighted average common shares outstanding – Basic | 42,788 |  |  | 38,745 |  |  | 40,126 |  |  | 38,780 |
Dilutive impact of share based compensation awards | 83 |  |  | 63 |  |  | 73 |  |  | 72 |
Weighted average common shares outstanding – Diluted | 42,871 |  |  | 38,808 |  |  | 40,199 |  |  | 38,852 |
For the three and nine months ended September 30, 2016 and September 30, 2015, an immaterial number of outstanding stock options, restricted stock units, and performance based restricted stock units for which the performance condition has been met as of the dates of determination were excluded from the computation of diluted earnings per share because the effect of including these awards would be anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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