Note 7 - Acquired Intangible Assets, Net - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gross value	$ 112,736	$ 118,859
Accumulated Currency Translation Adjustment	(3,218)	(4,227)
Current period impairment charge	(600)	(2,439)	$ (389)
Accumulated Amortization	(26,536)	(21,036)
Net book value	$ 82,382	$ 91,157
Useful life (Year)	13 years	13 years
Intangible assets, net	$ 82,382	$ 91,157
Developed Technology Rights [Member]
Gross value	89,580	93,953
Accumulated Currency Translation Adjustment	(1,608)	(2,648)
Current period impairment charge	0	(1,025)
Accumulated Amortization	(17,891)	(14,381)
Net book value	$ 70,081	$ 75,899
Useful life (Year)	15 years	15 years
Intangible assets, net	$ 70,081	$ 75,899
In Process Research and Development [Member]
Gross value	3,256	5,006
Accumulated Currency Translation Adjustment	(1,006)	(1,005)
Current period impairment charge	(600)	(1,414)
Accumulated Amortization	0	0
Net book value	1,650	2,587
Intangible assets, net	1,650	2,587
Customer Relationships [Member]
Gross value	9,000	9,000
Accumulated Currency Translation Adjustment	0	0
Current period impairment charge	0	0
Accumulated Amortization	(1,727)	(827)
Net book value	$ 7,273	$ 8,173
Useful life (Year)	10 years	10 years
Intangible assets, net	$ 7,273	$ 8,173
Distribution Rights [Member]
Gross value	4,700	4,700
Accumulated Currency Translation Adjustment	(415)	(415)
Current period impairment charge	0	0
Accumulated Amortization	(4,285)	(4,285)
Net book value	$ 0	$ 0
Useful life (Year)	5 years	5 years
Intangible assets, net	$ 0	$ 0
Patents [Member]
Gross value	1,000	1,000
Accumulated Currency Translation Adjustment	(189)	(159)
Current period impairment charge	0	0
Accumulated Amortization	(632)	(582)
Net book value	$ 179	$ 259
Useful life (Year)	16 years	16 years
Intangible assets, net	$ 179	$ 259
Trade Names [Member]
Gross value	5,200	5,200
Accumulated Currency Translation Adjustment	0	0
Current period impairment charge	0	0
Accumulated Amortization	(2,001)	(961)
Net book value	$ 3,199	$ 4,239
Useful life (Year)	5 years	5 years
Intangible assets, net	$ 3,199	$ 4,239