Earnings per Common Share - Computation of earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Income available to common shareholders (in thousands):
Net income	$ 8,045	$ 6,761	$ 23,601	$ 17,914
Less: Income attributable to unvested restricted stock awards	(33)	(30)	(103)	(85)
Net income available to common shareholders	$ 8,012	$ 6,731	$ 23,498	$ 17,829
Weighted average shares outstanding:
Common shares outstanding, including unvested restricted stock	14,047,746	13,641,330	13,963,307	13,635,404
Less: Unvested restricted stock	(58,332)	(60,792)	(60,983)	(64,955)
Weighted-average common shares outstanding - basic	13,989,414	13,580,538	13,902,324	13,570,449
Earnings per common share - basic	$ 0.57	$ 0.50	$ 1.69	$ 1.31
Income available to common shareholders (in thousands):
Net income	$ 8,045	$ 6,761	$ 23,601	$ 17,914
Less: Income attributable to unvested restricted stock awards	(33)	(30)	(103)	(85)
Net income available to common shareholders	$ 8,012	$ 6,731	$ 23,498	$ 17,829
Weighted average shares outstanding:
Common shares outstanding, including unvested restricted stock	14,047,746	13,641,330	13,963,307	13,635,405
Less: Unvested restricted stock	(58,332)	(60,792)	(60,983)	(64,955)
Plus: Effect of dilutive options	118,872	302,566	163,563	294,776
Weighted-average common shares outstanding - diluted	14,108,286	13,883,104	14,065,887	13,865,226
Earnings per common share - diluted	$ 0.57	$ 0.48	$ 1.67	$ 1.29