Note 6 - Intellectual Property (Tables)

9 Months Ended

Sep. 30, 2021

Notes Tables

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

	September 30, 2021
	(in thousands)
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact		Net Carrying Amount
Developed technology	$	68,838	$	(57,207	)	$	947	$	12,578
Technology and patents purchased		400		(192	)		34		242
Total intellectual property	$	69,238	$	(57,399	)	$	981	$	12,820

	December 31, 2020
	(in thousands)
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact		Net Carrying Amount
Developed technology	$	68,838	$	(51,734	)	$	4,872	$	21,976
Technology and patents purchased		400		(168	)		59		291
Total intellectual property	$	69,238	$	(51,902	)	$	4,931	$	22,267