Note 10 - Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 9,738	$ 20,741	$ 31,102	$ 38,631
Effective Income Tax Rate Reconciliation, Percent			27.70%	36.80%
Income Taxes Receivable					$ 18,100