Note 5 - Intellectual Property (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

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

	March 31, 2021
	(in thousands)
	Gross Carrying Amount		Accumulated Amortization			Foreign Currency Translation Impact		Net Carrying Amount
Developed technology	$	68,838	$	(52,465	)	$	1,950	$	18,323
Technology and patents purchased		400		(172	)		40		268
Total intellectual property	$	69,238	$	(52,637	)	$	1,990	$	18,591

	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