Description of Business - Earnings per share (Details) - $ / shares shares in Thousands |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2016 |
Sep. 30, 2016 |
Jun. 30, 2016 |
Mar. 31, 2016 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Income per common share - Basic (in dollars per share) | $ 0.25 | $ 0.30 | $ 0.28 | $ 0.29 | $ 0.43 | $ 0.29 | $ 0.32 | $ 0.22 | $ 1.13 | $ 1.25 | $ 1.22 |
| Income per common share - Diluted (in dollars per share) | $ 0.25 | $ 0.30 | $ 0.28 | $ 0.29 | $ 0.43 | $ 0.29 | $ 0.32 | $ 0.22 | $ 1.13 | $ 1.25 | $ 1.22 |
| Weighted average common shares - Basic | 4,299 | 4,503 | 4,634 | ||||||||
| Weighted average common shares - Diluted | 4,299 | 4,503 | 4,634 | ||||||||
| As Reported | |||||||||||
| Income per common share - Basic (in dollars per share) | $ 1.31 | $ 1.26 | |||||||||
| Income per common share - Diluted (in dollars per share) | $ 1.31 | $ 1.25 | |||||||||
| Weighted average common shares - Basic | 4,503 | 4,634 | |||||||||
| Weighted average common shares - Diluted | 4,514 | 4,653 | |||||||||
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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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