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Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Basic earnings per share:
Net income available to shareholders	$ 2,907	$ 1,919	$ 4,997	$ 4,020
Average shares outstanding	6,021,038	6,070,080	6,024,851	6,070,749
Basic earnings per share (in dollars per share)	$ 0.48	$ 0.32	$ 0.83	$ 0.66
Diluted earnings per share:
Net income available to shareholders	$ 2,907	$ 1,919	$ 4,997	$ 4,020
Average shares outstanding	6,021,038	6,070,080	6,024,851	6,070,749
Effect of dilutive stock options	6,883	5,141	6,442	5,157
Average shares outstanding including dilutive stock options	6,027,921	6,075,221	6,031,293	6,075,906
Diluted earnings per share (in dollars per share)	$ 0.48	$ 0.32	$ 0.83	$ 0.66

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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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