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Note 12 - Employee and Director Benefits - Exercisable Options Activity (Details) $ / shares in Units, $ in Thousands | 12 Months Ended
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Dec. 31, 2025 USD ($) $ / shares shares
Exercise Price Range 1 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 14
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 15
Exercisable, shares (in shares) | shares | 2,000
Exercisable, weighted average exercise price (in dollars per share) | $ 14.32
Exercisable, weighted average remaining contractual term (Year) | 8 months 12 days
Exercisable, aggregate intrinsic value | $ | $ 115
Exercise Price Range 2 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 18
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 19
Exercisable, shares (in shares) | shares | 2,000
Exercisable, weighted average exercise price (in dollars per share) | $ 18.32
Exercisable, weighted average remaining contractual term (Year) | 1 month 6 days
Exercisable, aggregate intrinsic value | $ | $ 107
Exercise Price Range 3 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 19
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 20
Exercisable, shares (in shares) | shares | 8,000
Exercisable, weighted average exercise price (in dollars per share) | $ 19.16
Exercisable, weighted average remaining contractual term (Year) | 1 month 6 days
Exercisable, aggregate intrinsic value | $ | $ 421
Exercise Price Range 4 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 34
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 35
Exercisable, shares (in shares) | shares | 2,000
Exercisable, weighted average exercise price (in dollars per share) | $ 34.09
Exercisable, weighted average remaining contractual term (Year) | 3 years 1 month 6 days
Exercisable, aggregate intrinsic value | $ | $ 75
Exercise Price Range 5 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 35
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 36
Exercisable, shares (in shares) | shares | 26,500
Exercisable, weighted average exercise price (in dollars per share) | $ 35.63
Exercisable, weighted average remaining contractual term (Year) | 2 years 9 months 18 days
Exercisable, aggregate intrinsic value | $ | $ 958
Exercise Price Range 6 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 38
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 39
Exercisable, shares (in shares) | shares | 5,500
Exercisable, weighted average exercise price (in dollars per share) | $ 38.26
Exercisable, weighted average remaining contractual term (Year) | 1 year 1 month 6 days
Exercisable, aggregate intrinsic value | $ | $ 184
Exercise Price Range 7 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 41
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 42
Exercisable, shares (in shares) | shares | 1,000
Exercisable, weighted average exercise price (in dollars per share) | $ 41.21
Exercisable, weighted average remaining contractual term (Year) | 2 years 1 month 6 days
Exercisable, aggregate intrinsic value | $ | $ 31
Exercise Price Range 8 [Member] |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit (in dollars per share) | $ 43
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit (in dollars per share) | $ 44
Exercisable, shares (in shares) | shares | 1,500
Exercisable, weighted average exercise price (in dollars per share) | $ 43.8
Exercisable, weighted average remaining contractual term (Year) | 2 years 6 months
Exercisable, aggregate intrinsic value | $ | $ 42
Exercise Price Range 9 [Member] |
Exercisable, shares (in shares) | shares | 48,500
Exercisable, weighted average exercise price (in dollars per share) | $ 31.92
Exercisable, weighted average remaining contractual term (Year) | 2 years
Exercisable, aggregate intrinsic value | $ | $ 1,933

X
- Definition The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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