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Summary of quarterly financial information (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2020
Summary of quarterly financial information (unaudited) |
Summary of quarterly financial information | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2020 |
Quarter Ended | ​ | March 31 | ​ | June 30 | ​ | Sept. 30 | ​ | Dec. 31 |
Interest income |  | $ | 23,842 |  | $ | 23,852 |  | $ | 23,346 |  | $ | 23,085 | ​
Interest expense | ​ |  | 4,281 | ​ |  | 3,345 | ​ |  | 3,422 | ​ |  | 3,276 | ​
Net interest income | ​ |  | 19,561 | ​ |  | 20,507 | ​ |  | 19,924 | ​ |  | 19,809 | ​
Provision for loan losses | ​ |  | 3,500 | ​ |  | 1,800 | ​ |  | 1,050 | ​ |  | 1,050 | ​
Net interest income after provision for loan losses | ​ |  | 16,061 | ​ |  | 18,707 | ​ |  | 18,874 | ​ |  | 18,759 | ​
Noninterest income | ​ |  | 3,550 | ​ |  | 3,422 | ​ |  | 4,935 | ​ |  | 4,735 | ​
Noninterest expense | ​ |  | 13,651 | ​ |  | 13,242 | ​ |  | 13,974 | ​ |  | 14,001 | ​
Income before income taxes | ​ |  | 5,960 | ​ |  | 8,887 | ​ |  | 9,835 | ​ |  | 9,493 | ​
Income tax expense | ​ |  | 679 | ​ |  | 1,311 | ​ |  | 1,523 | ​ |  | 1,308 | ​
Net income | ​ | $ | 5,281 | ​ | $ | 7,576 | ​ | $ | 8,312 | ​ | $ | 8,185 | ​
Per share data: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income - basic | ​ | $ | 0.72 | ​ | $ | 1.03 | ​ | $ | 1.14 | ​ | $ | 1.13 | ​
Net income - diluted | ​ | ​ | 0.71 | ​ | ​ | 1.03 | ​ | ​ | 1.13 | ​ | ​ | 1.13 | ​
Cash dividends declared | ​ | $ | 0.36 | ​ | $ | 0.36 | ​ | $ | 0.36 | ​ | $ | 0.36 | ​
Average common shares outstanding - basic | ​ | ​ | 7,379,438 | ​ | ​ | 7,341,636 | ​ | ​ | 7,277,189 | ​ | ​ | 7,222,810 | ​
Average common shares outstanding - diluted | ​ |  | 7,405,703 | ​ |  | 7,376,700 | ​ |  | 7,312,253 | ​ |  | 7,257,874 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2019 |
Quarter Ended | ​ | March 31 | ​ | June 30 | ​ | Sept. 30 | ​ | Dec. 31 |
Interest income |  | $ | 22,801 |  | $ | 23,332 |  | $ | 23,632 |  | $ | 23,616 | ​
Interest expense | ​ |  | 4,504 | ​ |  | 4,604 | ​ |  | 4,396 | ​ |  | 4,364 | ​
Net interest income | ​ |  | 18,297 | ​ |  | 18,728 | ​ |  | 19,236 | ​ |  | 19,252 | ​
Provision for loan losses | ​ |  | 1,050 | ​ |  | 350 | ​ |  | 700 | ​ |  | 4,000 | ​
Net interest income after provision for loan losses | ​ |  | 17,247 | ​ |  | 18,378 | ​ |  | 18,536 | ​ |  | 15,252 | ​
Noninterest income | ​ |  | 3,416 | ​ |  | 4,152 | ​ |  | 3,682 | ​ |  | 3,870 | ​
Noninterest expense | ​ |  | 13,490 | ​ |  | 14,429 | ​ |  | 14,079 | ​ |  | 13,644 | ​
Income before income taxes | ​ |  | 7,173 | ​ |  | 8,101 | ​ |  | 8,139 | ​ |  | 5,478 | ​
Income tax expense | ​ |  | 761 | ​ |  | 957 | ​ |  | 991 | ​ |  | 446 | ​
Net income | ​ | $ | 6,412 | ​ | $ | 7,144 | ​ | $ | 7,148 | ​ | $ | 5,032 | ​
Per share data: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income - basic | ​ | $ | 0.87 | ​ | $ | 0.96 | ​ | $ | 0.97 | ​ | $ | 0.68 | ​
Net income - diluted | ​ | ​ | 0.87 | ​ | ​ | 0.96 | ​ | ​ | 0.96 | ​ | ​ | 0.68 | ​
Cash dividends declared | ​ | $ | 0.34 | ​ | $ | 0.34 | ​ | $ | 0.34 | ​ | $ | 0.35 | ​
Average common shares outstanding - basic | ​ | ​ | 7,379,438 | ​ | ​ | 7,399,302 | ​ | ​ | 7,394,992 | ​ | ​ | 7,388,488 | ​
Average common shares outstanding - diluted | ​ |  | 7,408,536 | ​ |  | 7,413,114 | ​ |  | 7,417,403 | ​ |  | 7,410,899 | ​

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