Note 4 - Goodwill and Other Intangible Assets - Details of Other Intangible Assets and Related Future Amortization Expense (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($)
Finite-Lived Intangible Asset, Useful Life
Finite-lived intangible assets, gross	$ 564,947
Finite-lived intangible assets, accumulated amortization	159,541
Finite-lived intangible assets, Net Book Value	405,406
Finite-lived Intangible Assets Acquired	$ 211,600
Patents, Licenses, and Software [Member]
Finite-Lived Intangible Asset, Useful Life	10 years 219 days
Finite-lived intangible assets, gross	$ 193,622
Finite-lived intangible assets, accumulated amortization	64,012
Finite-lived intangible assets, Net Book Value	$ 129,610
Finite-lived intangible assets, useful life (Year)	8 years
Finite-lived Intangible Assets Acquired	$ 51,500
Distribution Rights [Member]
Finite-Lived Intangible Asset, Useful Life	12 years 219 days
Finite-lived intangible assets, gross	$ 44,473
Finite-lived intangible assets, accumulated amortization	33,434
Finite-lived intangible assets, Net Book Value	$ 11,039
Customer Lists, Trademarks, and Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life	18 years 36 days
Finite-lived intangible assets, gross	$ 314,452
Finite-lived intangible assets, accumulated amortization	59,591
Finite-lived intangible assets, Net Book Value	$ 254,861
Finite-lived intangible assets, useful life (Year)	17 years 73 days
Finite-lived Intangible Assets Acquired	$ 147,700
Order or Production Backlog [Member]
Finite-Lived Intangible Asset, Useful Life	1 year
Finite-lived intangible assets, gross	$ 12,400
Finite-lived intangible assets, accumulated amortization	2,504
Finite-lived intangible assets, Net Book Value	$ 9,896
Finite-lived intangible assets, useful life (Year)	1 year
Finite-lived Intangible Assets Acquired	$ 12,400