Note 15 - Restructuring Liabilities (Details Textual) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($) Position
Restructuring Cost And Reserve [Line Items]
Restructuring Costs | $	$ 2
Restructuring and Related Cost, Number of Positions Eliminated	40
United States and Canada [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated	20
World Excluding US and Canada [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated	20
Manufacturing Service Positions [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated	15
Administrative and Sales Positions [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated	25
Restructuring costs and other [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring Costs | $	$ 2