Earnings (Loss) Per Share - Basic and Diluted (Details) - shares	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Basic:
Weighted average shares outstanding, basic	29,322,054	28,518,353	28,029,936
Effect of dilutive securities:
Common stock options	0	0	324,344
Total weighted average shares outstanding assuming dilution	29,322,054	28,518,353	28,354,280

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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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.

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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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