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Earnings Per Share - Basic (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
Basic Earnings Per share |  |  |  |
Net income | $ 6,521 | $ 4,344 | $ 21,563 | $ 13,268
Weighted average shares outstanding (in shares) | 12,007,689 | 12,471,070 | 12,332,248 | 12,551,480
Basic earnings per share (in dollars per share) | $ 0.54 | $ 0.35 | $ 1.75 | $ 1.06

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