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Note 9 - Intangible Assets, Net

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

Note 9.  Intangible Assets, net

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Intangible assets consisted of the following for the periods indicated (in thousands):

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		March 31, 2024
​		Gross				Accumulated				Intangible
​		Amount				amortization				assets, net
Patents		$	9,553			$	(6,081	)		$	3,472
Trademarks			174				(36	)			138
Total intangible assets		$	9,727			$	(6,117	)		$	3,610

		December 31, 2023
​		Gross				Accumulated				Intangible
​		Amount				amortization				assets, net
Patents		$	9,502			$	(5,981	)		$	3,521
Trademarks			138				(31	)			107
Total intangible assets		$	9,640			$	(6,012	)		$	3,628

​

For the three months ended March 31, 2024 and 2023, amortization expense for intangible assets, included in general and administrative expenses on the statement of operations, was $0.1 million and $0.2 million, respectively. The remaining weighted average amortization period for intangible assets is approximately 7 years.

On March 31, 2024, future amortization expenses for intangible assets for future one year periods are estimated to be (in thousands):

2024(remaining 9 months)		$	388
2025			517
2026			517
2027			517
2028			517
2029 and thereafter			1,154
		$	3,610

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The entire disclosure for all or part of the information related to intangible assets.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 350
-SubTopic 30
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/350-30/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 3
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-URI https://asc.fasb.org/1943274/2147482665/350-30-50-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481283/985-20-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 985
-SubTopic 20
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/985-20/tableOfContent

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