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Note 3 - Net Income Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2019
Notes Tables |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30, |  |  | September 30, |
(in thousands, except share and per share amounts) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Net income |  | $ | 16,792 |  |  | $ | 20,937 |  |  | $ | 48,469 |  |  | $ | 57,302 |
Basic - weighted-average shares outstanding: |  |  | 26,846,030 |  |  |  | 27,038,585 |  |  |  | 26,894,420 |  |  |  | 26,963,205 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee stock options and other |  |  | 159,311 |  |  |  | 299,301 |  |  |  | 178,453 |  |  |  | 305,106 |
Diluted - weighted-average shares outstanding: |  |  | 27,005,341 |  |  |  | 27,337,886 |  |  |  | 27,072,873 |  |  |  | 27,268,311 |
Net income per share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.63 |  |  | $ | 0.77 |  |  | $ | 1.80 |  |  | $ | 2.13 |
Diluted |  | $ | 0.62 |  |  | $ | 0.77 |  |  | $ | 1.79 |  |  | $ | 2.10 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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