Note 8 - Financing Arrangements (Details) - Net Carrying Amount of the Liability Component and the Remaining Unamortized Debt Discount (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Note 8 - Financing Arrangements (Details) - Net Carrying Amount of the Liability Component and the Remaining Unamortized Debt Discount [Line Items]
Carrying amount of the liability component	$ 1,146,585	$ 108,750
Convertible Debt [Member]
Note 8 - Financing Arrangements (Details) - Net Carrying Amount of the Liability Component and the Remaining Unamortized Debt Discount [Line Items]
Carrying amount of equity component	20,470	20,470
Carrying amount of the liability component	112,035	108,750
Unamortized discount of the liability component	7,965	11,250
Unamortized deferred financing costs	$ 1,440	$ 2,034