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Note 9 - Intangible Assets, Net (Tables)

6 Months Ended

Jun. 30, 2023

Notes Tables

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

		June 30, 2023
​		Gross				Accumulated				Intangible
​		Amount				amortization				assets, net
Patents		$	9,216			$	(5,640	)		$	3,576
Trademarks			74				(25	)			49
Total intangible assets		$	9,290			$	(5,665	)		$	3,625

		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]

2024		$	646
2025			649
2026			649
2027			649
2028			649
2029 and thereafter			383
		$	3,625

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
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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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-Topic 350
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-Section 50
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