Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	38.80%	33.00%
Income Tax Expense (Benefit)	$ 14,111	$ 4,710
Deferred Tax Assets, Net	$ 70,500		$ 74,900