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Summary of Significant Accounting Policies - Basic and Diluted Net Income Per Share (Details) - USD ($)
$ / shares in Units, $ 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
Earnings Per Share [Abstract]                    
Weighted average shares outstanding                 5,969,575 6,205,261
Weighted average director deferred shares                 114,483 114,096
Basic shares                 6,084,058 6,319,357
Dilutive shares                 419,650 420,250
Diluted shares                 6,503,708 6,739,607
Net income                 $ 6,864 $ 4,451
Basic net income per share $ 0.37 $ 0.31 $ 0.23 $ 0.22 $ 0.27 $ 0.13 $ 0.15 $ 0.15 $ 1.13 $ 0.70
Diluted net income per share $ 0.35 $ 0.29 $ 0.22 $ 0.20 $ 0.25 $ 0.13 $ 0.14 $ 0.14 $ 1.06 $ 0.66