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Earnings Per Common 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
Numerator:
Net income available to common shareholders	$ 5,510	$ 3,604	$ 10,724	$ 6,716
Denominator:
Weighted-average common shares outstanding - basic	7,370,709	6,986,948	7,353,867	6,713,608
Common stock equivalents	380,437	379,260	385,215	385,773
Weighted-average common shares outstanding - diluted	7,751,146	7,366,208	7,739,082	7,099,381
Earnings per common share:
Basic	$ 0.75	$ 0.52	$ 1.46	$ 1
Diluted	$ 0.71	$ 0.49	$ 1.39	$ 0.95

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