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Earnings per Common Share | 3 Months Ended
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Mar. 31, 2016
Earnings Per Share [Abstract] |
Earnings per Common Share | Note 3. Earnings per Common Share Basic earnings per common share is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted earnings per common share reflects the potential dilution that could occur if convertible securities, or other contracts to issue common stock, were exercised or converted into common stock. Dilutive securities are included in the calculation of diluted earnings per common share using the treasury stock method and the if-converted method in accordance with Accounting Standards Codification ("ASC") Topic 260, “Earnings per Share.” Dilutive securities include convertible notes, options granted pursuant to the Company’s stock option plans and outstanding restricted stock units and performance share units granted to employees and non-employee directors (see Note 10). Weighted-average common shares outstanding—diluted is the same as weighted-average common shares outstanding—basic in periods when a net loss is reported or in periods when diluted earnings per share is higher than basic earnings per share. The following table summarizes the computation of basic and diluted earnings per share (in thousands, except per share data):
| Three Months Ended March 31,
| 2016 |  | 2015
Earnings per common share—basic |  |  |
Net income | $ | 38,390 |  |  | $ | 35,819 |
Weighted-average common shares outstanding—basic | 93,952 |  |  | 77,753 |
Basic earnings per common share | $ | 0.41 |  |  | $ | 0.46 |
Earnings per common share—diluted |  |  |
Net income | $ | 38,390 |  |  | $ | 35,819 |
Add: Interest on convertible debt | — |  |  | 1,246 |
Net income including assumed conversions | $ | 38,390 |  |  | $ | 37,065 |
Weighted-average common shares outstanding—basic | 93,952 |  |  | 77,753 |
Convertible notes weighted-average shares outstanding | — |  |  | 15,000 |
Options and restricted stock | 1,472 |  |  | 1,143 |
Weighted-average common shares outstanding—diluted | 95,424 |  |  | 93,896 |
Dilutive earnings per common share | $ | 0.40 |  |  | $ | 0.39 |
For the three months ended March 31, 2016 and 2015, securities outstanding totaling approximately 413,000 and 705,000 shares, respectively, comprised of stock options and restricted stock units, have been excluded from the calculation of earnings per common share—diluted as their effect would be antidilutive.

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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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