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Note 9 - Stock Based Compensation - Restricted Stock Activity (Details) | 9 Months Ended
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Sep. 30, 2022 $ / shares shares
Non-vested, shares (in shares) | shares | 44,235
Non-vested, weighted average grant date fair value (in dollars per share) | $ / shares | $ 42.33
Granted, shares (in shares) | shares | 23,842
Granted, weighted average grant date fair value (in dollars per share) | $ / shares | $ 46.06
Vested, shares (in shares) | shares | (11,158)
Vested, weighted average grant date fair value (in dollars per share) | $ / shares | $ 41.63
Forfeited, shares (in shares) | shares | (1,587)
Forfeited, weighted average grant date fair value (in dollars per share) | $ / shares | $ 44.17
Non-vested, shares (in shares) | shares | 55,332
Non-vested, weighted average grant date fair value (in dollars per share) | $ / shares | $ 44.03

X
- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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X
- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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X
- Definition Number of non-vested options outstanding. + References No definition available. + Details
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- Definition Weighted average grant-date fair value of non-vested options forfeited. + References No definition available. + Details
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