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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Earnings Per Share [Abstract]                      
          Net Income Available to Common Shareholders $ 30,672 $ 27,374 $ 22,683 $ 21,342 $ 23,386 $ 22,732 $ 22,148 $ 19,814 $ 102,071 $ 88,080 $ 89,595
Undistributed Earnings (Loss) Allocated to Participating Securities, Basic                 958 843 887
Distributed earnings allocated to common shares outstanding                 36,619 34,901 35,745
Undistributed earnings allocated to common shares outstanding                 64,494 52,336 52,963
Net earnings allocated to common shareholders $ 30,378 $ 27,119 $ 22,480 $ 21,142 $ 23,161 $ 22,499 $ 21,942 $ 19,635 $ 101,113 $ 87,237 $ 88,708
Average shares outstanding, basic 14,756 14,776 14,888 14,974 15,026 15,279 15,573 15,656 14,847 15,381 15,975
Effect of dilutive securities                 26 26 20
Average shares outstanding, diluted 14,785 14,800 14,909 15,002 15,056 15,302 15,594 15,687 14,873 15,407 15,995
Basic earnings per share $ 2.06 $ 1.84 $ 1.51 $ 1.41 $ 1.54 $ 1.47 $ 1.41 $ 1.25 $ 6.81 $ 5.67 $ 5.55
Diluted earnings per share $ 2.05 $ 1.83 $ 1.51 $ 1.41 $ 1.54 $ 1.47 $ 1.41 $ 1.25 $ 6.80 $ 5.66 $ 5.55