Note 9 - Intellectual Property

12 Months Ended

Dec. 31, 2023

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, 2023
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact			Net Carrying Amount
			(in thousands)
Developed technology	$	68,838	$	(66,902	)	$	(837	)	$	1,099
Technology and patents purchased		400		(279	)		17			138
Total intellectual property	$	69,238	$	(67,181	)	$	(820	)	$	1,237

	December 31, 2022
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact			Net Carrying Amount
			(in thousands)
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

The weighted average remaining useful life of the developed technology and technology and patents purchased was 3.2 years and 3.3 years, respectively, as of December 31, 2023. 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 estimated future amortization expense of intellectual property as of December 31, 2023 is as follows (in thousands):

	Year Ending December 31, 2023
2024	$	388
2025		388
2026		389
2027		72
Total	$	1,237