Shareholders’ Equity, Other Comprehensive Income and Earnings Per Share - Earnings Per Share (EPS) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Components of earnings per share calculations
Net income	$ 18,020	$ 6,572	$ 13,459
Weighted average number of common shares used in earnings per common share – basic (in shares)	3,501,221	3,486,510	3,454,282
Effect of dilutive securities:
Effect of dilutive securities—stock option awards		79	1,601
Weighted average number of common shares used in earnings per common share – assuming dilution	3,501,221	3,486,589	3,455,883

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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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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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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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