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Earnings Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Numerator:
Net income	$ 1,744	$ 1,389	$ 3,511	$ 2,737
Denominator:
Weighted average common shares outstanding (basic)	18,038	18,580	18,058	18,696
Effect of stock options	102	119	100	112
Weighted average common shares outstanding (diluted)	18,140	18,699	18,158	18,808
Earnings per common share:
Basic	$ 0.10	$ 0.07	$ 0.19	$ 0.15
Diluted	$ 0.10	$ 0.07	$ 0.19	$ 0.15

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