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
	Mar. 31, 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	$ 675
Amortization of Financing Costs	92
Amortization of Debt Discount	819
Debt Instrument, Convertible, Interest Expense	$ 1,586
Debt Instrument, Convertible, Effective Interest Rate	6.25%