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Note 12 - Stock-based Compensation (Tables)

6 Months Ended

Jun. 30, 2026

Notes Tables

Schedule of Share-Based Payment Award, Employee Stock Purchase Plan, Valuation Assumptions [Table Text Block]

Expected term (years)	4.6 - 4.9
Expected volatility	140.0	%
Risk-free interest rate	3.7% - 4.2	%
Dividend yield	—	%

Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

		Three months ended June 30,								Six months ended June 30,
		2026				2025				2026				2025
Research and development		$	304			$	316			$	515			$	1,011
Sales and marketing			167				126				251				255
General and administrative			1,948				718				3,195				2,395
Total stock-based compensation		$	2,419			$	1,160			$	3,961			$	3,661

X

- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

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

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X

- Definition

Tabular disclosure of the significant assumptions used during the year to estimate the fair value of employee stock purchase plans, including, but not limited to: (a) expected term, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 718
-SubTopic 50
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/718-50/tableOfContent

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

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- References

No definition available.

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