Note 8 - Fair Value of Financial Instruments and Concentrations of Credit Risk (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 8 - Fair Value of Financial Instruments and Concentrations of Credit Risk (Details) [Line Items]
Nontrade Receivables (in Dollars)	$ 15.6	$ 17.7
Allowance for Doubtful Accounts Receivable, Write-offs (in Dollars)			5.2
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Note 8 - Fair Value of Financial Instruments and Concentrations of Credit Risk (Details) [Line Items]
Concentration Risk, Percentage	50.00%
Number of Major Customers	20
Concentration Risk, Number of Customers Accounted for a Certain Percentage of Revenues	0	0	0
Percentage of Threshold Limit of Sales Revenue	10.00%	10.00%	10.00%
Sales Revenue, Net [Member]
Note 8 - Fair Value of Financial Instruments and Concentrations of Credit Risk (Details) [Line Items]
Concentration Risk, Number of Customers Accounted for a Certain Percentage of Revenues	0	0	0
Percentage of Threshold Limit of Sales Revenue	10.00%	10.00%	10.00%
Senior Notes [Member]
Note 8 - Fair Value of Financial Instruments and Concentrations of Credit Risk (Details) [Line Items]
Fair Value, Estimate Not Practicable, Senior Debt Obligations (in Dollars)	$ 231.2	$ 176.0