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Note 18 - Earnings per Share (Tables) | 12 Months Ended
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Dec. 31, 2021
Earnings per Share |
Schedule of computation of earnings per share on a basic and diluted basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 |  | 2020 |  | 2019
​ | ​ | (dollars in thousands, except per share data)
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income | ​ | $ | 98,905 | ​ | $ | 60,582 | ​ | $ | 57,408
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic EPS | ​ | $ | 6.30 | ​ | $ | 3.84 | ​ | $ | 3.65
Diluted EPS | ​ | $ | 6.20 | ​ | $ | 3.80 | ​ | $ | 3.60
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average common shares outstanding | ​ |  | 15,708,744 | ​ |  | 15,771,650 | ​ |  | 15,730,016
Weighted average common shares issuable upon exercise of stock options | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
and under the employee stock purchase plan | ​ |  | 235,964 | ​ |  | 180,987 | ​ |  | 237,759
Weighted average common and common equivalent shares outstanding | ​ |  | 15,944,708 | ​ |  | 15,952,637 | ​ |  | 15,967,775
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ * Excludes anti-dilutive shares of 0, 104,636 and 80,437 at December 31, 2021, 2020 and 2019, 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=124432515&loc=d3e3550-109257 + Details
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