Note 16 - Commitments and Contingencies - Operating Lease Rent Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Rent	$ 39.5	$ 40.0	$ 35.8
Sublease income	(0.1)	(0.1)	(0.1)
Total rent expense	$ 39.4	$ 39.9	$ 35.7