Note 11 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Note 11 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)		$ 12,098	$ 22,313	$ 43,200	$ 60,944
Effective Income Tax Rate Reconciliation, Percent				26.50%	37.30%
Income Taxes Receivable						$ 18,100
Scenario, Forecast [Member]
Note 11 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	27.00%