Note 13 - Shareholders' Equity - Accumulated Other Comprehensive Loss, Net of Tax (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance	$ 437.3	$ 421.4	$ 435.1	$ 406.1
Net current period other comprehensive loss	(16.1)	4.9	(20.1)	(5.8)
Balance	434.0	437.5	434.0	437.5
Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance			(36.0)	(19.1)
Other comprehensive (loss) income before reclassifications			(20.7)	(5.8)
Amounts reclassified from accumulated other comprehensive loss			0.0	0.0
Net current period other comprehensive loss			(20.7)	(5.8)
Balance	(56.7)	(24.9)	(56.7)	(24.9)
Accumulated Defined Benefit Plans Adjustment Attributable to Noncontrolling Interest [Member]
Balance			(2.1)	(1.7)
Other comprehensive (loss) income before reclassifications			0.0	0.1
Amounts reclassified from accumulated other comprehensive loss			0.0	0.0
Net current period other comprehensive loss			0.0	0.1
Balance	(2.1)	(1.6)	(2.1)	(1.6)
Accumulated Gain (Loss), Cash Flow Hedge, Including Noncontrolling Interest [Member]
Balance			0.2	0.7
Other comprehensive (loss) income before reclassifications			8.5	4.7
Amounts reclassified from accumulated other comprehensive loss			(7.9)	(4.8)
Net current period other comprehensive loss			0.6	(0.1)
Balance	0.8	0.6	0.8	0.6
AOCI Including Portion Attributable to Noncontrolling Interest [Member]
Balance			(37.9)	(20.1)
Other comprehensive (loss) income before reclassifications			(12.2)	(1.0)
Amounts reclassified from accumulated other comprehensive loss			(7.9)	(4.8)
Net current period other comprehensive loss			(20.1)	(5.8)
Balance	$ (58.0)	$ (25.9)	$ (58.0)	$ (25.9)