Note 6 - Income Taxes (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	35.00%
Income Taxes Receivable	$ 7.5	$ 2.4
Unrecognized Tax Benefits	29.7	25.8	17.4	17.3
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	19.3	16.8
Income Tax Examination, Penalties and Interest Accrued	1.9	1.1	1.5
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 4.2	$ 4.0