Note 9 - Intellectual Property

12 Months Ended

Dec. 31, 2022

Notes to Financial Statements

Intangible Assets Disclosure [Text Block]

9. Intellectual Property

The components of gross intellectual property, accumulated amortization, and net intellectual property are as follows:

	December 31, 2022
	(in thousands)
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact			Net Carrying Amount
Developed technology	$	68,838	$	(66,562	)	$	(874	)	$	1,402
Technology and patents purchased		400		(239	)		13			174
Total intellectual property	$	69,238	$	(66,801	)	$	(861	)	$	1,576

	December 31, 2021
	(in thousands)
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact			Net Carrying Amount
Developed technology	$	68,838	$	(58,912	)	$	(262	)	$	9,664
Technology and patents purchased		400		(199	)		27			228
Total intellectual property	$	69,238	$	(59,111	)	$	(235	)	$	9,892

The weighted average remaining useful life of the developed technology and technology and patents purchased was 4.2 years and 4.3 years, respectively, as of December 31, 2022. The weighted average remaining useful life of the developed technology and technology and patents purchased was 1.6 years and 5.3 years, respectively as of December 31, 2021.

The estimated future amortization expense of intellectual property as of December 31, 2022 is as follows (in thousands):

	Year Ending December 31, 2022
2023	$	377
2024		377
2025		377
2026		377
2027		68
Total	$	1,576