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Note I - Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

		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

		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]

		December 31, 2023
2024		$	683
2025			683
2026			683
2027			683
2028			683
2029			213
thereafter			-
Total		$	3,628

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.

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

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