Note 13 - Long-Term Debt Interest Expense Recognized Related to Convertible Debt (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 Convertible Debt [Member]	Dec. 31, 2011 Convertible Debt [Member]	Dec. 31, 2012 Five Point Six Two Five Percent Senior Notes due 2013 [Member]	Feb. 01, 2003 Five Point Six Two Five Percent Senior Notes due 2013 [Member]
Schedule of Interest Expense Recognized Related to Convertible Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			5.625%	5.625%
Contractual interest expense of convertible debt	$ 13,500	$ 13,500
Amortization of debt issuance costs	1,094	1,039
Amortization of debt discount	17,756	16,131
Total interest expense for convertible debt	$ 32,350	$ 30,670
Effective interest rate of the liability component of convertible debt	9.75%	9.75%