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Note 8 - Earnings Per Common Share | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Earnings Per Share [Text Block] | 8 . Earnings per Common Share Basic and diluted earnings per common share were computed as follows:
(In thousands, except per share amounts) |  | 201 8 |  |  | 2017 |  |  | 2016 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 55,027 |  |  | $ | 90,284 |  |  | $ | 33,464 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Basic earnings per common share - weighted-average shares |  |  | 54,590 |  |  |  | 54,492 |  |  |  | 54,177 |
Effect of dilutive stock options |  |  | 559 |  |  |  | 358 |  |  |  | 284 |
Diluted earnings per common share - weighted-average shares and assumed conversions |  |  | 55,149 |  |  |  | 54,850 |  |  |  | 54,461 |
Basic earnings per common share |  | $ | 1.01 |  |  | $ | 1.66 |  |  | $ | 0.62 |
Diluted earnings per common share |  | $ | 1.00 |  |  | $ | 1.65 |  |  | $ | 0.61 |
Options totaling 153,500, 145,169 and 564,833 equivalent shares were outstanding but were not included in the calculation of diluted earnings per share for 2018, 2017 and 2016, respectively, because including the options in the denominator would be antidilutive, or decrease the number of weighted-average shares, due to their exercise prices exceeding the average market price of the common shares, or because inclusion of average unrecognized compensation expense in the calculation would cause the options to be antidilutive. Unvested performance unit awards (see Note 14 ) totaling 1,638, 124,046 and 64,162 equivalent shares for 2018, 2017 and 2016, respectively, were considered outstanding but were not included in the calculation of diluted earnings per share because inclusion of average unrecognized compensation expense in the calculation would cause the performance units to be antidilutive.

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