Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Gross value	$ 118,859		$ 28,206
Accumulated Currency Translation Adjustment	(4,738)		(4,759)
Current period impairment charge	(1,025)	$ (281)	389
Accumulated Amortization	(17,118)		(15,473)
Net book value	$ 95,978		$ 7,585
Useful life (Year)	13 years		11 years
Loss on impairment of intangible asset	$ 1,025	$ 281	$ (389)
In Process Research and Development [Member]
Gross value	5,006		4,406
Accumulated Currency Translation Adjustment	(1,242)		(1,234)
Current period impairment charge	0		0
Accumulated Amortization	0		0
Net book value	3,764		3,172
Loss on impairment of intangible asset	(0)		0
Developed Technology Rights [Member]
Gross value	93,953		17,100
Accumulated Currency Translation Adjustment	(2,904)		(2,934)
Current period impairment charge	(1,025)		389
Accumulated Amortization	(11,460)		(9,657)
Net book value	$ 78,564		$ 4,120
Useful life (Year)	15 years		15 years
Loss on impairment of intangible asset	$ 1,025		$ (389)
Customer Relationships [Member]
Gross value	9,000
Accumulated Currency Translation Adjustment	0
Current period impairment charge	0
Accumulated Amortization	(377)
Net book value	$ 8,623
Useful life (Year)	10 years
Loss on impairment of intangible asset	$ (0)
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
Loss on impairment of intangible asset	$ (0)		$ 0
Patents [Member]
Gross value	1,000		1,000
Accumulated Currency Translation Adjustment	(177)		(176)
Current period impairment charge	0		0
Accumulated Amortization	(555)		(531)
Net book value	$ 268		$ 293
Useful life (Year)	16 years		16 years
Loss on impairment of intangible asset	$ (0)		$ 0
Elevess Trade Name [Member]
Gross value			1,000
Accumulated Currency Translation Adjustment			0
Current period impairment charge			0
Accumulated Amortization			(1,000)
Net book value			$ 0
Useful life (Year)			9 years
Loss on impairment of intangible asset			$ 0
Trade Names [Member]
Gross value	5,200
Accumulated Currency Translation Adjustment	0
Current period impairment charge	0
Accumulated Amortization	(441)
Net book value	$ 4,759
Useful life (Year)	5 years
Loss on impairment of intangible asset	$ (0)