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Net Income Per Share | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Net Income Per Share | Net Income Per Share Basic net income per common share (“Basic EPS”), is computed by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share (“Diluted EPS”) reflects the potential dilution that could occur if stock options or other contracts to issue common stock were exercised or converted into common stock. The computation of Diluted EPS does not assume exercise or conversion of securities that would have an anti-dilutive effect on net income per common share. Following is a reconciliation of the numerator and denominator of Basic EPS to the numerator and denominator of Diluted EPS for the three months ended March 31, 2018 and 2017 (dollar and share amounts in thousands, except for per share information):
| Three Months Ended March 31,
| 2018 |  | 2017
Net income attributable to common shareholders: | $ | 498 |  |  | $ | 2,160 |
Basic weighted average shares outstanding | 19,010 |  |  | 18,845 |
Basic earnings per share attributable to common shareholders: | $ | 0.03 |  |  | $ | 0.11 |
Diluted shares outstanding |  |  |  |  |
Basic weighted-average shares outstanding | 19,010 |  |  | 18,845 |
Stock-based awards | 343 |  |  | 415 |
Diluted weighted-average shares outstanding | 19,353 |  |  | 19,260 |
Diluted earnings per share attributable to common shareholders: | $ | 0.03 |  |  | $ | 0.11 |
Potentially dilutive shares excluded from diluted-per-share amounts: |  |  |  |  |
Stock options | 155 |  |  | 224 |
Potentially anti-dilutive shares excluded from diluted-per-share amounts: |  |  |  |  |
Stock options | 1,148 |  |  | 1,201 |
Potentially dilutive shares excluded from diluted-per-share amounts include performance-based options to purchase shares of common stock for which certain earnings metrics have not been achieved. Potentially anti-dilutive shares excluded from diluted-per-share amounts include both non-qualified stock options and unearned performance-based options to purchase shares of common stock with exercise prices greater than the weighted-average share price during the period and shares that would be anti-dilutive to the computation of diluted net income per share for each of the periods presented.

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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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