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Note 18 - Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2020
Earnings per Share |
Schedule of computation of earnings per share on a basic and diluted basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2020 |  | 2019 |  | 2018
​ | ​ | (dollars in thousands, except per share data)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 60,582 | ​ | $ | 57,408 | ​ | $ | 43,120
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | $ | 3.84 | ​ | $ | 3.65 | ​ | $ | 2.92
Diluted EPS | ​ | $ | 3.80 | ​ | $ | 3.60 | ​ | $ | 2.86
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding* | ​ |  | 15,771,650 | ​ |  | 15,730,016 | ​ |  | 14,768,687
Weighted average common shares issuable upon exercise of stock options | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
and under the employee stock purchase plan | ​ |  | 180,987 | ​ |  | 237,759 | ​ |  | 296,043
Weighted average common and common equivalent shares outstanding** | ​ |  | 15,952,637 | ​ |  | 15,967,775 | ​ |  | 15,064,730
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ * The increase in weighted average common shares outstanding from 2018 to 2019 was primarily due to the common stock issuances that occurred in conjunction with the Springfield Bancshares merger. ** Excludes anti-dilutive shares of 104,636, 80,437 and 91,954 at December 31, 2020, 2019 and 2018, respectively.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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