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Note 12 - Long-term Incentive Plan - Stock Option Activity (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Outstanding outstanding (in shares) | 54,000 | 244,000
Weighted average exercise price, options outstanding (in dollars per share) | $ 1.83 | $ 2.66
Weighted average fair value at grant date, options outstanding (in dollars per share) | $ 0.43 | $ 1.03
Options exercised (in shares) | 0 | 0
Weighted average exercise price, options exercised (in dollars per share) | $ 0 | $ 0
Weighted average fair value at grant date, options exercised (in dollars per share) | $ 0 | $ 0
Options expired (in shares) | 0 | (190,000)
Weighted average exercise price, options expired (in dollars per share) | $ 0 | $ 2.89
Weighted average fair value at grant date, options expired (in dollars per share) | $ 0 | $ 1.20
Options granted (in shares) | 0 |
Weighted average exercise price, options granted (in dollars per share) | $ 0 |
Options cancelled or forfeited (in shares) | 0 |
Weighted average exercise price, options cancelled or forfeited (in dollars per share) | $ 0 |
Outstanding outstanding (in shares) | 54,000 | 54,000
Weighted average exercise price, options outstanding (in dollars per share) | $ 1.83 | $ 1.83
Weighted average fair value at grant date, options outstanding (in dollars per share) | $ 0.43 | $ 0.43
Options Vested (in shares) | 54,000 |
Weighted average exercise price, options vested (in dollars per share) | $ 1.83 |
Weighted average fair value at grant date, options vested (in dollars per share) | $ 0.43 |

X
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- Definition The weighted average grant-date fair value of options expired during the reporting period as calculated by applying the disclosed option pricing methodology. + References No definition available. + Details
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- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. + 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)(04) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average price of options that were either forfeited or expired. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + 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)(03) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- 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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- Definition Number of options outstanding, including both vested and non-vested options. + 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)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + 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)(ii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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