Earnings Per Common Share (Schedule of Earnings Per Share Calculation) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net income available to common shareholders	$ 14,017	$ 2,217	$ 34,706	$ 9,727
Denominator:
Weighted-average common shares outstanding - basic	7,873,868	7,732,293	7,832,330	7,711,181
Common stock equivalents	127,160	82,972	133,735	109,164
Weighted-average common shares outstanding - diluted	8,001,028	7,815,265	7,966,065	7,820,345
Earnings per common share:
Basic	$ 1.78	$ 0.29	$ 4.43	$ 1.26
Diluted	$ 1.75	$ 0.28	$ 4.36	$ 1.24