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Note 5 - Supplemental Balance Sheet Information - Amortization of Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Amortization of intangible assets	$ 405	$ 228
Research and Development Expense [Member]
Amortization of intangible assets	376	203
Selling, General and Administrative Expenses [Member]
Amortization of intangible assets	$ 29	$ 25

X

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

+ References

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Reference 6: http://www.xbrl.org/2003/role/exampleRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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