Note 8 - Derivative Instruments - Fair Value of Forward and Put Option Contracts (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Other Current Assets [Member]
Derivative [Line Items]
Other current assets	$ 2.4	$ 3.1
Contracts in liability position	0.0	0.0
Net asset (liability)	2.4	3.1
Other Non-current Assets [Member]
Derivative [Line Items]
Other current assets	0.8	1.5
Contracts in liability position	0.0	0.0
Net asset (liability)	0.8	1.5
Other Current Liabilities [Member]
Derivative [Line Items]
Other current assets	0.0	0.0
Contracts in liability position	0.0	(0.1)
Net asset (liability)	0.0	(0.1)
Other Non-current Liabilities [Member]
Derivative [Line Items]
Other current assets	0.0	0.0
Contracts in liability position	0.0	0.0
Net asset (liability)	$ 0.0	$ 0.0
Forward and Put Option Contracts [Member]
Derivative [Line Items]
Other Non-current assets	Other non-current assets
Forward and Put Option Contracts [Member] | Other Current Assets [Member]
Derivative [Line Items]
Other current assets	Other current assets
Forward and Put Option Contracts [Member] | Other Current Liabilities [Member]
Derivative [Line Items]
Other current liabilities	Other current liabilities
Forward and Put Option Contracts [Member] | Other Non-current Liabilities [Member]
Derivative [Line Items]
Other non current liabilities	Other non-current liabilities