Note 23 - Balance Sheet Offsetting (Details) - Financial Instruments that are Eligible for Offset in the Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Liabilities:
Gross amounts of recognized liabilities	$ 450,000	$ 800,000
Net amounts of liabilities presented in the statement of financial position	450,000	800,000
Collateral posted	(450,000)	(800,000)
Derivatives	4,626
Derivatives	4,626
Derivatives	$ (4,626)