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Note 5 - Common Shares and Earnings Per Share - Reconciliation of Weighted Average Common Shares Outstanding (Details) - shares | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Weighted Average Common Shares Outstanding – Basic (in shares) | 40,913,972 | 39,714,672 | 40,548,133 | 39,694,677
Shares Expected to be Awarded for Stock Performance Awards Granted to Executive Officers based on Measurement Period-to-Date Performance (in shares) | 98,012 | 149,023 | 107,017 | 147,106
Underlying Shares Related to Nonvested Restricted Stock Units Granted to Employees (in shares) | 48,682 | 68,138 | 53,303 | 63,902
Shares Expected to be Issued Under the Employee Stock Purchase Plan (in shares) | 13,182 | 0 | 14,997 | 0
Nonvested Restricted Shares (in shares) | 2,603 | 13,107 | 8,033 | 14,896
Shares Expected to be Issued Under the Deferred Compensation Program for Directors (in shares) | 1,238 | 1,799 | 1,445 | 1,999
Total Dilutive Shares (in shares) | 163,717 | 232,067 | 184,795 | 227,903
Weighted Average Common Shares Outstanding – Diluted (in shares) | 41,077,689 | 39,946,739 | 40,732,928 | 39,922,580

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- Definition This element represents additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of nonvested restricted shares. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of shares expected to be issued under deferred compensation program for directors. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of underlying shares related to nonvested restricted stock units granted to employees. + References No definition available. + Details
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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1707-109256 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -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 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1500-109256 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121326447&loc=d3e1757-109256 + Details
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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + 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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