Note 13 - Income Taxes (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Effective Income Tax Rate Reconciliation, Percent	33.00%	36.80%
Income Tax Expense (Benefit)	$ 4,710	$ 4,906
Deferred Tax Assets, Net	$ 95,900		$ 99,100