Note 10 - Goodwill, In-process Research and Development and Intellectual Property - In-process Research and Development and Intellectual Property (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net			$ 28,596
Intangible assets impairment			0	$ 7,912
Finite-Lived Intangible Assets, Net	$ 28,596		22,267	28,596
Finite-Lived Intangible Assets, Gross					$ 69,238	$ 66,813
Finite-Lived Intangible Assets, Accumulated Amortization					(51,902)	(37,030)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact					4,931	(1,187)
Intangible Assets	28,596		28,596	28,596	22,267	28,596
In Process Research and Development [Member]
Finite-Lived Intangible Assets, Net			2,470	10,747
Intangible assets impairment	0	$ 7,900	0	(7,912)
Foreign currency translation impact			(45)	(365)
Transfer of in-process research and development to intellectual property			(2,425)
Finite-Lived Intangible Assets, Net	2,470		0	2,470
Intangible Assets	2,470		2,470	10,747	0	2,470
Developed Technology Rights [Member]
Finite-Lived Intangible Assets, Net			28,287
Finite-Lived Intangible Assets, Net	28,287		21,976	28,287
Finite-Lived Intangible Assets, Gross					68,838	66,413
Finite-Lived Intangible Assets, Accumulated Amortization					(51,734)	(36,918)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact					4,872	(1,208)
Intangible Assets	28,287		28,287	28,287	21,976	28,287
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets, Net			309
Finite-Lived Intangible Assets, Net	309		291	309
Finite-Lived Intangible Assets, Gross					400	400
Finite-Lived Intangible Assets, Accumulated Amortization					(168)	(112)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact					59	21
Intangible Assets	$ 309		$ 309	$ 309	$ 291	$ 309