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Consolidated Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Consolidated Quarterly Financial Information (Unaudited) [Abstract] |  |  |  |  |  |  |  |  |  |  |
Total interest income | $ 11,415 | $ 11,574 | $ 11,399 | $ 11,785 | $ 12,255 | $ 12,521 | $ 12,483 | $ 13,058 | $ 46,173 | $ 50,317 | $ 49,197
Total interest expense | 1,314 | 1,492 | 1,604 | 1,781 | 1,869 | 1,895 | 1,830 | 1,671 | 6,191 | 7,265 | 5,471
Net interest income | 10,101 | 10,082 | 9,795 | 10,004 | 10,386 | 10,626 | 10,653 | 11,387 | 39,982 | 43,052 | 43,726
Provision for loan losses | (471) | (2) | (393) | 3,846 | (1,015) | 444 | (806) | 2,377 | 2,980 | 1,000 | 1,039
Noninterest income | 2,313 | 2,434 | 2,249 | 4,442 | 3,210 | 2,107 | 2,003 | 1,846 | 11,438 | 9,166 | 8,938
Noninterest expense | 7,121 | 9,891 | 9,602 | 9,519 | 10,401 | 9,738 | 9,791 | 9,568 | 36,133 | 39,498 | 37,426
Net income | $ 4,700 | $ 2,294 | $ 2,263 | $ 1,002 | $ 3,498 | $ 2,137 | $ 3,079 | $ 1,193 | $ 10,259 | $ 9,907 | $ 11,944
Earnings per share (in dollars per share) | $ 0.98 | $ 0.48 | $ 0.47 | $ 0.21 | $ 0.73 | $ 0.45 | $ 0.65 | $ 0.25 | $ 2.14 | $ 2.08 | $ 2.53

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