Note 8 - Goodwill and Identifiable Intangible Assets - Identifiable Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Intangible assets, accumulated amortization	$ 142,188	$ 85,335
Intangible assets, gross	322,635	308,268
Intangible assets, net	180,447	222,933
Developed Technology Rights [Member]
Finite lived intangible assets, gross	186,800	126,300
Intangible assets, accumulated amortization	86,378	53,533
Finite lived intangible assets, net	100,422	72,767
Customer Relationships [Member]
Finite lived intangible assets, gross	70,540	70,540
Intangible assets, accumulated amortization	21,681	11,954
Finite lived intangible assets, net	48,859	58,586
Trade Names [Member]
Finite lived intangible assets, gross	2,310	2,310
Intangible assets, accumulated amortization	1,350	888
Finite lived intangible assets, net	960	1,422
Patents [Member]
Finite lived intangible assets, gross	1,579	1,579
Intangible assets, accumulated amortization	881	734
Finite lived intangible assets, net	698	845
Computer Software, Intangible Asset [Member]
Finite lived intangible assets, gross	61,406	47,039
Intangible assets, accumulated amortization	31,898	18,226
Finite lived intangible assets, net	$ 29,508	28,813
In Process Research and Development [Member]
Indefinite lived Intangible assets		$ 60,500