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Note 9 - Intangible Assets, Net (Tables)

3 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Finite-Lived Intangible Assets [Table Text Block]

		March 31, 2023
​		Gross				Accumulated				Intangible
​		Amount				amortization				assets, net
Patents		$	9,111			$	(5,493	)		$	3,618
Trademarks			60				(23	)			37
Total intangible assets		$	9,171			$	(5,516	)		$	3,655

		December 31, 2022
​		Gross				Accumulated				Intangible
​		Amount				amortization				assets, net
Patents		$	8,994			$	(5,330	)		$	3,664
Trademarks			56				(21	)			35
Total intangible assets		$	9,050			$	(5,351	)		$	3,699

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

2023			477
2024			636
2025			636
2026			636
2027			636
2028 and thereafter			634
			3,655

X

- Definition

Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.

+ References

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-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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- Definition

Tabular disclosure of the amount of amortization expense expected to be recorded in succeeding fiscal years for finite-lived intangible assets.

+ References

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-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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-Subparagraph (a)
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