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Earnings per Share - Components (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic earnings per share:
Net income available to shareholders	$ 3,520	$ 2,907	$ 8,186	$ 4,997
Average shares outstanding	6,276,236	6,261,880	6,276,236	6,265,845
Basic earnings per share (in dollars per share)	$ 0.56	$ 0.46	$ 1.30	$ 0.80
Diluted earnings per share:
Net income available to shareholders	$ 3,520	$ 2,907	$ 8,186	$ 4,997
Average shares outstanding	6,276,236	6,261,880	6,276,236	6,265,845
Effect of dilutive stock options	0	7,158	0	6,700
Average shares outstanding including dilutive stock options	6,276,236	6,269,038	6,276,236	6,272,545
Diluted earnings per share (in dollars per share)	$ 0.56	$ 0.46	$ 1.30	$ 0.80

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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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