Note 12 - Fair Value Measurements - Fair Value Measurements of Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Total Assets	$ 3.0	$ 6.4
Contingent consideration	1.8	2.1
Total Liabilities	27.3	18.3
Contingent consideration	1.8	2.1
Fair Value, Inputs, Level 1 [Member]
Total Assets	0.0	0.0
Contingent consideration	0.0	0.0
Total Liabilities	0.0	0.0
Contingent consideration	0.0	0.0
Fair Value, Inputs, Level 2 [Member]
Total Assets	3.0	6.4
Contingent consideration	0.0	0.0
Total Liabilities	25.5	16.2
Contingent consideration	0.0	0.0
Fair Value, Inputs, Level 3 [Member]
Total Assets	0.0	0.0
Contingent consideration	1.8	2.1
Total Liabilities	1.8	2.1
Contingent consideration	1.8	2.1
Foreign Exchange Forward [Member]
Foreign currency contracts, asset	3.0	6.4
Foreign currency contracts, liability	25.5	16.2
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 1 [Member]
Foreign currency contracts, asset	0.0	0.0
Foreign currency contracts, liability	0.0	0.0
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 2 [Member]
Foreign currency contracts, asset	3.0	6.4
Foreign currency contracts, liability	25.5	16.2
Foreign Exchange Forward [Member] | Fair Value, Inputs, Level 3 [Member]
Foreign currency contracts, asset	0.0	0.0
Foreign currency contracts, liability	$ 0.0	$ 0.0