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Income Per Share | 6 Months Ended
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Jun. 30, 2017
Earnings Per Share [Abstract] |
Income Per Share | 2. INCOME PER SHARE: The weighted average number of common shares outstanding is calculated as follows (in thousands):
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2017 |  |  | 2016 |  |  | 2017 |  |  | 2016 |
Weighted average shares outstanding - basic |  |  | 51,154 |  |  |  | 50,977 |  |  |  | 51,100 |  |  |  | 51,011 |
Effect of dilutive stock-based compensation |  |  | 180 |  |  |  | 244 |  |  |  | 216 |  |  |  | 285 |
Weighted average shares outstanding - diluted |  |  | 51,334 |  |  |  | 51,221 |  |  |  | 51,316 |  |  |  | 51,296 |

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