Earnings Per Share - Reconciliation of the Weighted Average Number of Common Shares Outstanding (Details) - shares shares in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Earnings Per Share [Abstract]
Beginning Balance, Shares	11,886	11,750
Weighted average common shares issued	246	102
Weighted average number of common shares outstanding	12,132	11,852
Dilutive effect of stock options	449	415
Diluted weighted average number of common shares outstanding	12,581	12,267

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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No definition available.

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

+ References

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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.

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- Definition

This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

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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.

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