Earnings Per Common Share (Calculations of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Earnings Per Share [Abstract]
Distributed Earnings	$ 6,983	$ 6,709	$ 13,760	$ 13,652
Undistributed Earnings, Diluted, Total	3,034	(2,051)	11,656	(9,842)
Net Income (Loss) Available to Common Stockholders, Diluted	$ 10,017	$ 4,658	$ 25,416	$ 3,810
Weighted-average number of common shares outstanding - basic	19,317,454	19,720,315	19,300,156	20,043,329
Weighted Average Number Diluted Shares Outstanding Adjustment	144,480	138,565	148,388	139,893
Weighted Average Number of Shares Outstanding, Diluted, Total	19,461,934	19,858,880	19,448,544	20,183,222
Earnings per common share - basic	$ 0.52	$ 0.24	$ 1.32	$ 0.19
Earnings per common share - diluted	$ 0.51	$ 0.23	$ 1.31	$ 0.19
Anti-dilutive shares excluded from computation of EPS	0	77,371	0	57,170