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Earnings Per Common Share | 12 Months Ended
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Dec. 31, 2018
Earnings Per Share [Abstract] |
Earnings Per Common Share | Note 16— Earnings Per Common Share Basic and diluted earnings per common share are computed by dividing net income by the weighted-average number of basic and diluted common shares outstanding, respectively. The weighted-average number of diluted common shares includes the impact of dilutive securities, including outstanding stock options and unvested restricted stock and restricted stock units. The table below reconciles the weighted-average basic and diluted common shares outstanding for 2018, 2017 and 2016:
| Year Ended December 31, 2018 |  |  |  |
| 2018 |  | 2017 |  | 2016
| (in thousands) |  |  |  |
Weighted average number of common shares outstanding - basic | 74,002 |  | 73,355 |  | 72,754
Effect of dilutive securities 1 | 610 |  | 993 |  | 720
Weighted average number of common shares outstanding - diluted | 74,612 |  | 74,348 |  | 73,474
1Certain outstanding equity awards are anti-dilutive and were therefore excluded from the calculation of the weighted average number of diluted common shares outstanding. For the year ended December 31, 2018, 2017 and 2016, options to purchase 0.6 million, less than 0.1 million shares and 0.5 million shares were excluded from the calculation of weighted average number of diluted common shares outstanding, respectively. The per share exercise prices of such awards were $42.84, $39.38 and $34.14, respectively.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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