Note 7 - Earnings Per Share ("EPS") - Basic and Diluted Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic weighted average common shares outstanding (in shares)	14,237	14,579	14,524	14,572
Stock options, SARs, RSUs and RSAs (in shares)	140	536	296	493
Diluted shares used in the calculation of earnings per share (in shares)	14,377	15,115	14,820	15,065

The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation.

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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.

+ References

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-Topic 260
-SubTopic 10
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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
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-Publisher FASB
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