Note 19 - Derivative Financial Instruments - Effect of Master Netting Arrangements on Derivative Assets and Liabilities in the Consolidated Statements of Condition (Details) - Interest Rate Swap [Member] - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Interest Rate Swaps, Gross Amount of Recognized Assets	$ 6,350	$ 48
Interest Rate Swaps, Gross Amount Offset in the Statement of Condition	0	0
Interest Rate Swaps, Net Amount of Assets Presented in the Statement of Condition	6,350	48
Interest Rate Swaps, Financial Instruments	3,386	48
Interest Rate Swaps, Cash Collateral Received	2,964	0
Interest Rate Swaps, Net Amount	0	0
Interest Rate Swaps, Gross Amount of Recognized Liabilities	3,386	4,314
Interest Rate Swaps, Gross Amount Offset in the Statement of Condition	0
Interest Rate Swaps, Net Amount of Liabilities Presented in the Statement of Condition	3,386	4,314
Interest Rate Swaps, Financial Instruments	3,386	48
Interest Rate Swaps, Cash Collateral Received	0	4,266
Interest Rate Swaps, Net Amount	$ 0	0
Interest Rate Swaps, Gross Amount Offset in the Statement of Condition		$ 0