Earnings Per Common Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income	$ 18,328	$ 27,858	$ 22,289
Net income available to common shareholders	$ 18,328	$ 27,858	$ 22,289
Denominator:
Weighted-average common shares outstanding - basic	7,718,615	7,528,283	7,384,200
Common stock equivalents	105,599	244,261	353,295
Weighted-average common shares outstanding - diluted	7,824,214	7,772,544	7,737,495
Earnings per common share:
Basic	$ 2.37	$ 3.70	$ 3.02
Diluted	$ 2.34	$ 3.58	$ 2.88