Note 10 - Long-Term Debt Interest Expense Recognized Related to Convertible Debt (Details) (Two Point Two Five Percent Convertible Notes Due 2019 [Member], Convertible Debt [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Two Point Two Five Percent Convertible Notes Due 2019 [Member] | Convertible Debt [Member]
Schedule of Interest Expense Recognized Related to Convertible Debt [Line Items]
Interest Expense, Debt, Excluding Amortization	$ 2,250	$ 2,925
Amortization of Financing Costs	308	400
Amortization of Debt Discount	2,758	3,577
Debt Instrument, Convertible, Interest Expense	$ 5,316	$ 6,902
Debt Instrument, Interest Rate, Effective Percentage	6.25%	6.25%