Earnings per Common Share - Computation of earnings per share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income available to common shareholders (in thousands):
Net income	$ 7,882	$ 6,079	$ 15,556	$ 11,153
Less: Income attributable to unvested restricted stock awards	(34)	(29)	(70)	(55)
Net income available to common shareholders	$ 7,848	$ 6,050	$ 15,486	$ 11,098
Weighted average shares outstanding:
Common shares outstanding, including unvested restricted stock	13,992,414	13,637,112	13,920,387	13,632,393
Less: Unvested restricted stock	(60,158)	(64,333)	(62,330)	(67,073)
Weighted-average common shares outstanding - basic	13,932,256	13,572,779	13,858,057	13,565,320
Earnings per common share - basic	$ 0.56	$ 0.45	$ 1.11	$ 0.82
Income available to common shareholders (in thousands):
Net income	$ 7,882	$ 6,079	$ 15,556	$ 11,153
Less: Income attributable to unvested restricted stock awards	(34)	(28)	(69)	(54)
Net income available to common shareholders	$ 7,848	$ 6,051	$ 15,487	$ 11,099
Weighted average shares outstanding:
Common shares outstanding, including unvested restricted stock	13,992,414	13,637,112	13,920,387	13,632,393
Less: Unvested restricted stock	(60,158)	(64,333)	(62,330)	(67,073)
Plus: Effect of dilutive options	152,904	295,368	184,148	287,616
Weighted-average common shares outstanding - diluted	14,085,160	13,868,147	14,042,205	13,852,936
Earnings per common share - diluted	$ 0.56	$ 0.44	$ 1.10	$ 0.80