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Note 8 - Options: Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range (Details) | 12 Months Ended
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Dec. 31, 2022 $ / shares shares
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | $ 49.18
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 82.60
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares | 67,433
Weighted Average Remaining Contractual Life (Years) | 6.86
Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price | $ 73.66
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares | 39,749
Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price | $ 68.42
Range 1 |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | 49.18
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 58.50
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares | 13,762
Weighted Average Remaining Contractual Life (Years) | 2.68
Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price | $ 54.12
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares | 13,762
Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price | $ 54.12
Range 2 |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | 74.64
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 77.05
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares | 33,071
Weighted Average Remaining Contractual Life (Years) | 6.79
Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price | $ 76.22
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares | 25,987
Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price | $ 75.99
Range 3 |
Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit | 82.60
Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit | $ 82.60
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Outstanding | shares | 20,600
Weighted Average Remaining Contractual Life (Years) | 9.78
Share-Based Payment Arrangement, Option, Exercise Price Range, Outstanding, Weighted Average Exercise Price | $ 82.60
Share-Based Payment Arrangement, Option, Exercise Price Range, Shares Exercisable | shares | 0
Share-Based Payment Arrangement, Option, Exercise Price Range, Exercisable, Weighted Average Exercise Price | $ 0.00

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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i)-(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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