Note 21 - Condensed Financial Information (Parent Company Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
NET INCOME	$ 96,814	$ 74,364	$ 35,688
Equity in other comprehensive (loss) income of subsidiaries	(12,547)	(1,329)	1,666
COMPREHENSIVE INCOME	84,267	73,035	37,354
Parent Company [Member]
NET INCOME	96,814	74,364	35,688
Equity in other comprehensive (loss) income of subsidiaries	(12,547)	(1,329)	1,666
COMPREHENSIVE INCOME	$ 84,267	$ 73,035	$ 37,354