Note 10 - Long-Term Debt Schedule of Liability and Equity Components of Convertible Debt (Details) (Convertible Debt [Member], Two Point Two Five Percent Convertible Notes Due 2019 [Member], USD $)	1 Months Ended		3 Months Ended
	Mar. 31, 2013		Mar. 31, 2013
Schedule of Liability and Equity Components of Convertible Debt [Line Items]
Debt Instrument, Increase, Additional Borrowings	$ 400,000,000
Debt Instrument, Face Amount	400,000,000		400,000,000
Proceeds from Issuance of Long-term Debt	389,800,000
Debt Instrument, Convertible, Conversion Ratio			94.3396
Debt Instrument, Convertible, Conversion Price	$ 10.60		$ 10.60
Debt Instrument, Unamortized Discount (Premium), Net	78,222,000	[1]	78,222,000	[1]
Convertible Debt	321,778,000		321,778,000
Debt Instrument, Convertible, Carrying Amount of Equity Component	$ 77,026,000	[2],[3]	$ 77,026,000	[2],[3]
Redemption Trigger based on Company Stock Price [Member]
Schedule of Liability and Equity Components of Convertible Debt [Line Items]
Debt Instrument, Convertible, Threshold Trading Days			20
Debt Instrument, Convertible, Threshold Consecutive Trading Days			30 days
Convertible Debt Trigger Based on Common Stock Price			130.00%
Debt Convertible, Percentage Used For Determining Redemption Price			100.00%
Conversion Trigger based on Company Stock Price [Member]
Schedule of Liability and Equity Components of Convertible Debt [Line Items]
Debt Instrument, Convertible, Threshold Trading Days			20
Debt Instrument, Convertible, Threshold Consecutive Trading Days			30 days
Convertible Debt Trigger Based on Common Stock Price			130.00%
Conversion Trigger based on Trading Price of Debt Versus Company Stock Price [Member]
Schedule of Liability and Equity Components of Convertible Debt [Line Items]
Debt Instrument, Convertible, Threshold Trading Days			5
Debt Instrument, Convertible, Threshold Consecutive Trading Days			5 days
Convertible Debt Trigger Based on Trading Price Per Share of Debt			98.00%

[1] Included within long-term debt and is being amortized over the life of the convertible notes.

[2] A full valuation allowance has been recorded against the deferred income tax impact.

[3] Included within additional paid-in capital, net of related issuance costs.