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Note 11 - Stock-Based Compensation - Stock-Based Payment Awards (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024 USD ($) $ / shares shares
Outstanding and Exerciseable at December 31, 2023 (in shares) | shares	924,067
Outstanding and Exerciseable at December 31, 2023 (in dollars per share) | $ / shares	$ 3.37
Exercised (in shares) | shares	(3,899)
Exercised (in dollars per share) | $ / shares	$ 3.96
Outstanding and Exerciseable at March 31, 2024 (in shares) | shares	920,168
Outstanding and Exerciseable at March 31, 2024 (in dollars per share) | $ / shares	$ 3.37
Outstanding and Exerciseable at March 31, 2024 (Year)	3 years 2 months 12 days
Outstanding and Exerciseable at March 31, 2024 | $	$ 964

X

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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X

- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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

+ References

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- Definition

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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- Definition

Number of share options (or share units) exercised during the current period.

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