Note 13 - Income Taxes Schedule of Components of Income Tax Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Schedule of Components of Income Tax Provision [Line Items]
Foreign tax credit carryforward	$ 900
Alternative minimum tax credit carryforward	5,923	$ 2,286
Current (benefit) provision	120	(26,575)	$ 352
Deferred income tax (benefit) expense	156,170	(825,843)	(31,847)
Income tax (benefit) provision	$ 156,290	$ (852,418)	$ (31,495)