v3.5.0.2

Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Components of Basic and Diluted Earnings Per Share | The components of basic and diluted earnings per share for the quarter and nine months ended September 30, 2016 and 2015 are as follows:
|  | Quarter Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
|  | (Thousands of dollars) |
Weighted average outstanding shares of common stock, basic |  |  | 15,683 |  |  |  | 15,587 |  |  |  | 15,655 |  |  |  | 15,558 |
Dilutive effect of unvested restricted stock units |  |  | — |  |  |  | 65 |  |  |  | — |  |  |  | 82 |
Weighted average outstanding shares of common stock, diluted (1) |  |  | 15,683 |  |  |  | 15,652 |  |  |  | 15,655 |  |  |  | 15,640 |
(1) | For the three months ended September 30, 2016, 52,126 unvested restricted stock units were excluded from the weighted average outstanding shares of common stock, diluted, as they were anti-dilutive to earnings per share. For the nine months ended September 30, 2016, 22,221 unvested restricted stock units were excluded from the weighted average outstanding shares of common stock, diluted, as they were anti-dilutive to earnings per share.

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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