Note 6 - Goodwill, In-process Research and Development and Intellectual Property - In-Process Research and Development and Intellectual Property (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net	$ 28,596
Finite-Lived Intangible Assets, Net	24,139
Finite-Lived Intangible Assets, Gross		$ 69,238	$ 66,813
Finite-Lived Intangible Assets, Accumulated Amortization		(46,970)	(37,030)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact		1,871	(1,187)
Intangible Assets	28,596	24,139	28,596
In Process Research and Development [Member]
Finite-Lived Intangible Assets, Net	2,470
Foreign currency translation impact	(45)
Transfer to developed technology	(2,425)
Finite-Lived Intangible Assets, Net	0
Intangible Assets	2,470	0	2,470
Developed Technology Rights [Member]
Finite-Lived Intangible Assets, Net	28,287
Finite-Lived Intangible Assets, Net	23,849
Finite-Lived Intangible Assets, Gross		68,838	66,413
Finite-Lived Intangible Assets, Accumulated Amortization		(46,820)	(36,918)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact		1,831	(1,208)
Intangible Assets	28,287	23,849	28,287
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets, Net	309
Finite-Lived Intangible Assets, Net	290
Finite-Lived Intangible Assets, Gross		400	400
Finite-Lived Intangible Assets, Accumulated Amortization		(150)	(112)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact		40	21
Intangible Assets	$ 309	$ 290	$ 309