Note 10 - Debt (Details) - Convertible Debt Interest Expense (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Note 10 - Debt (Details) - Convertible Debt Interest Expense [Line Items]
Amortization of debt discount expense			$ 5,071	$ 4,896
Amortization of debt issue costs	740	736	1,418	1,645
Twenty Fifteen Convertible Notes [Member]
Note 10 - Debt (Details) - Convertible Debt Interest Expense [Line Items]
Interest expense related to the contractual interest coupon	2,777	2,777	5,555	5,555
Amortization of debt discount expense	1,862	1,656	3,653	3,251
Amortization of debt issue costs	250	238	495	473
Interest expense related to the 2015 Convertible Notes	$ 4,889	$ 4,671	$ 9,703	$ 9,279