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Note 16 - Net Earnings Per Common Share - Reconciliation of the Denominator Used to Calculate Earnings Per Common Share (Details) - shares | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Shares issued and outstanding at beginning of period (in shares) | 44,226,493 | 44,013,031
Issued during the period (in shares) | 329,888 | 162,076
Weighted average number of shares used in computing basic earnings per share (in shares) | 44,556,381 | 44,175,107
Assumed exercise of stock options, net of shares assumed acquired under the Treasury Stock Method (in shares) | 238,593 | 318,900
Number of shares used in computing diluted earnings per share (in shares) | 44,794,974 | 44,494,007

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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of call options and warrants using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-22 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 23 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-23 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 26 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482689/260-10-45-26 + Details
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