Note 13 - Share-based Compensation - Summary of Significant Assumptions for Share-based Compensation Awards (Details) - $ / shares	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Share-Based Payment Arrangement, Option [Member]
Weighted average fair value per share at grant date (in dollars per share)	$ 4.14	$ 5.39
Share-Based Payment Arrangement, Option [Member] \| Minimum [Member]
Risk free interest rate	3.50%	1.60%
Expected award life (years) (Year)	3 years	3 years
Expected volatility	46.90%	46.80%
Expected dividend yield	4.70%	2.40%
Share-Based Payment Arrangement, Option [Member] \| Maximum [Member]
Risk free interest rate	4.90%	3.80%
Expected award life (years) (Year)	10 years	10 years
Expected volatility	67.80%	65.00%
Expected dividend yield	7.10%	5.60%
Stock Appreciation Rights (SARs) [Member]
Risk free interest rate	4.00%
Expected award life (years) (Year)	3 years
Expected volatility	67.80%
Expected dividend yield	4.70%
Weighted average fair value per share at grant date (in dollars per share)	$ 4.58	$ 6.34
Stock Appreciation Rights (SARs) [Member] \| Minimum [Member]
Risk free interest rate		1.60%
Expected award life (years) (Year)		3 years
Expected volatility		61.60%
Expected dividend yield		2.40%
Stock Appreciation Rights (SARs) [Member] \| Maximum [Member]
Risk free interest rate		3.80%
Expected award life (years) (Year)		4 years
Expected volatility		64.80%
Expected dividend yield		5.60%

Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(03)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iv)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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