Note 13 - Income Taxes Effect of Unrecognized Tax Benefits on Consolidated Balance Sheets and Results of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Effect of Unrecognized Tax Benefits on Balance Sheets and Results of Operations [Line Items]
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions	$ 336	$ 0
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	66,300
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	61,700
Unrecognized Tax Benefits, Interest and Penalties Charged to Income	$ 800	$ 2,500	$ 5,400