Note 8 - Financing Arrangements (Details) - Net Carrying Amount of the Liability Component and the Remaining Unamortized Debt Discount (USD $) In Thousands, unless otherwise specified	Jun. 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	$ 706,420	$ 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	110,920	108,750
Unamortized discount of the liability component	9,080	11,250
Unamortized deferred financing costs	$ 1,642	$ 2,034