Note 6 - Goodwill, In-Process Research and Development and Intellectual Property - In-Process Research and Development and Intellectual Property (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets, Net	$ 28,596
Finite-Lived Intangible Assets, Net	25,802
Finite-Lived Intangible Assets, Gross	69,238	$ 66,813
Finite-Lived Intangible Assets, Accumulated Amortization	(42,340)	(37,030)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact	(1,096)	(1,187)
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
Developed Technology Rights [Member]
Finite-Lived Intangible Assets, Net	28,287
Finite-Lived Intangible Assets, Net	25,514
Finite-Lived Intangible Assets, Gross	68,838	66,413
Finite-Lived Intangible Assets, Accumulated Amortization	(42,207)	(36,918)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact	(1,117)	(1,208)
Technology-Based Intangible Assets [Member]
Finite-Lived Intangible Assets, Net	309
Finite-Lived Intangible Assets, Net	288
Finite-Lived Intangible Assets, Gross	400	400
Finite-Lived Intangible Assets, Accumulated Amortization	(133)	(112)
Finite-Lived Intangible Assets, Foreign Currency Translation Impact	$ 21	$ 21