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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, 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 - Stock Option Activity Under Equity Incentive Plans and Director Plan (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024
Exercised, number of options (in shares)	10,014	75,283
Service based Stock Options [Member]
Beginning balance, outstanding, number of options (in shares)	470,321		470,321
Beginning balance, outstanding, weighted average exercise price (in dollars per share)	$ 35.38		$ 35.38
Granted, number of options (in shares)			11,021	54,530
Granted, weighted average exercise price (in dollars per share)			$ 17.34
Exercised, number of options (in shares)			10,014
Forfeited, number of options (in shares)			32,695
Exercised, weighted average exercise price (in dollars per share)			$ 13.17
Forfeited, weighted average exercise price (in dollars per share)			$ 41.29
Expired, number (in shares)			59,965
Outstanding, number (in shares)			378,668
Expired, weighted average exercise price (in dollars per share)			$ 24.7
Outstanding, weighted average exercise price (in dollars per share)			$ 36.62
Outstanding, weighted average contractual term (Year)			5 years 10 months 13 days
Forfeited, weighted average exercise price (in dollars per share)			$ 41.29
Outstanding, aggregate intrinsic value			$ 34
Exercisable, number (in shares)			322,704
Exercisable, weighted average exercise price (in dollars per share)			$ 36.63
Exercisable, weighted average remaining contractual term (Year)			5 years 7 months 24 days
Exercisable, aggregate intrinsic value			$ 34
Performance based Stock Options [Member]
Beginning balance, outstanding, number of options (in shares)	404,833		404,833
Beginning balance, outstanding, weighted average exercise price (in dollars per share)	$ 39.54		$ 39.54
Granted, number of options (in shares)			0	404,833
Exercised, number of options (in shares)			0
Forfeited, number of options (in shares)			300,000
Forfeited, weighted average exercise price (in dollars per share)			$ 39.54
Outstanding, number (in shares)			104,833
Outstanding, weighted average exercise price (in dollars per share)			$ 39.54
Outstanding, weighted average contractual term (Year)			4 years 6 months 21 days
Forfeited, weighted average exercise price (in dollars per share)			$ 39.54
Outstanding, aggregate intrinsic value			$ 0
Exercisable, number (in shares)			0