Note 8 - Intangible Assets

6 Months Ended

Jun. 30, 2023

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

8. Intangible Assets

Intangible assets consist of the following (in thousands):

	June 30, 2023			December 31, 2022
Patents and copyrights	$	10,517		$	14,319
Accumulated amortization		(9,326	)		(12,960	)
	$	1,191		$	1,359