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Note 8 - Stock-based Incentive Plans - Warrants Activity (Details) - Stock Warrants [Member] | 12 Months Ended
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Dec. 31, 2024 $ / shares shares
Outstanding, number of warrants (in shares) | shares | 31,000
Outstanding, exercise price per shares, warrants (in dollars per share) | $ / shares | $ 49.21
Granted, number of warrants (in shares) | shares | 0
Granted, exercise price per shares, warrants (in dollars per share) | $ / shares | $ 0
Expired, number of warrants (in shares) | shares | 0
Expired, exercise price per shares, warrants (in dollars per share) | $ / shares | $ 0
Outstanding, number of warrants (in shares) | shares | 31,000
Outstanding, exercise price per shares, warrants (in dollars per share) | $ / shares | $ 49.21
Outstanding, remaining contractual term, warrants (Year) | 2 years 8 months 12 days
Vested and exercisable, number of warrants (in shares) | shares | 31,000
Vested and exercisable, exercise price per shares, warrants (in dollars per share) | $ / shares | $ 49.21
Vested and exercisable, remaining contractual term, warrants (Year) | 3 years 8 months 12 days

X
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References No definition available. + Details
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Period Type: | duration

X
- Definition Weighted average remaining contractual term for fully vested and expected to vest exercisable or convertible equity instruments other than options. + References No definition available. + Details
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- Definition Number of fully vested and expected to vest exercisable non-option equity instruments that may be converted into shares under plan. + References No definition available. + Details
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X
- Definition Weighted-average exercise price, at which grantee can acquire shares reserved for issuance, for fully vested and expected to vest exercisable or convertible non-option equity instruments. + References No definition available. + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock equity instruments other than options plan. + References No definition available. + Details
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X
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to non-option equity instruments that expired. + References No definition available. + Details
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X
- Definition Weighted average remaining contractual term for equity-based awards excluding options, 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 -Topic 718 -SubTopic 10 -Subparagraph (e)(1) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of shares under non-option equity instrument agreements for which rights to exercise lapsed. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(04) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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X
- Definition Net number of non-option equity instruments granted to participants. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Definition Number of equity instruments other than options outstanding, including both vested and non-vested instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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- Details
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