Amount of expense (benefit) for award under share-based payment arrangements.

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- Definition

Represents the fair value granted for share based compensation arrangement to each non-employee director at the annual meeting or when joining the board

+ References

No definition available.

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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- Definition

Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Number of shares authorized for issuance under share-based payment arrangement.

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Gross number of share options (or share units) granted during the period.

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Number of shares issued under share-based payment arrangement.

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Note 5 - Share-based Compensation (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 8,800,000		$ 8,800,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 10 months 13 days
Proceeds from Stock Options Exercised			$ 132,000	$ 0
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	1,400,000		$ 1,400,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			2 years 7 months 6 days
Share-Based Payment Arrangement, Expense	(87,000)	$ 112,000	$ 84,000	$ 64,000
Service based Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			11,021	54,530
Service based Stock Options [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			10 years
Service based Stock Options [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			5 years
Performance based Stock Options [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			6 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)			0	404,833
Nonvested [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period			700,000	0
Share-Based Payment Arrangement, Expense	$ 394,000	$ (169,000)	$ 394,000	$ (156,000)
Director Plan 2004 [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	3,000,000		3,000,000
Director Plan 2004 [Member] \| Nonqualified Stock Options [Member] \| Director [Member]
Share Based Compensation, Arrangement By Share Based Payment Award, Options Grant, Amount			$ 100,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			1 year
Director Plan 2004 [Member] \| Nonqualified Stock Options [Member] \| Director [Member] \| Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			10 years
Director Plan 2004 [Member] \| Nonqualified Stock Options [Member] \| Director [Member] \| Minimum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year)			3 years
The 2006 Equity Incentive Plan [Member] \| Common Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	1,800,000		1,800,000