Note 2 - Long-term Debt (Details) (USD $)	1 Months Ended
	Oct. 18, 2013	Sep. 30, 2013	Dec. 31, 2012
Subsequent Event [Member] | 2020 Notes [Member]
Note 2 - Long-term Debt (Details) [Line Items]
Proceeds from Notes Payable	$ 375,000,000
Debt Instrument, Interest Rate, Effective Percentage	6.984%
Subsequent Event [Member] | Senior Credit Facility 2012 [Member]
Note 2 - Long-term Debt (Details) [Line Items]
Repayments of Senior Debt	376,000,000
Term Loan 2012 [Member]
Note 2 - Long-term Debt (Details) [Line Items]
Line of Credit Facility, Amount Outstanding		535,000,000	535,000,000
2020 Notes [Member]
Note 2 - Long-term Debt (Details) [Line Items]
Unsecured Debt		300,000,000	300,000,000
Debt Instrument, Interest Rate, Stated Percentage		7.50%	7.50%
Debt Instrument, Interest Rate, Effective Percentage		7.60%	7.60%
Deferred Finance Costs, Net		6,400,000	7,100,000
Senior Credit Facility 2012 [Member]
Note 2 - Long-term Debt (Details) [Line Items]
Line of Credit Facility, Amount Outstanding		535,000,000	535,000,000
Repayments of Senior Debt	376,000,000
Debt Instrument, Interest Rate at Period End		4.80%	4.80%
Deferred Finance Costs, Net		$ 4,100,000	$ 4,600,000