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Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Basic earnings per share:
Net income available to shareholders	$ 3,098	$ 1,766	$ 8,095	$ 5,786
Average shares outstanding	6,023,269	6,057,399	6,024,317	6,066,253
Basic earnings per share (in dollars per share)	$ 0.51	$ 0.29	$ 1.34	$ 0.95
Diluted earnings per share:
Net income available to shareholders	$ 3,098	$ 1,766	$ 8,095	$ 5,786
Average shares outstanding	6,023,269	6,057,399	6,024,317	6,066,253
Effect of dilutive stock options	6,363	5,784	6,480	5,407
Average shares outstanding including dilutive stock options	6,029,632	6,063,183	6,030,797	6,071,660
Diluted earnings per share (in dollars per share)	$ 0.51	$ 0.29	$ 1.34	$ 0.95

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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