Note 15 - Balance Sheet Offsetting (Tables)

3 Months Ended

Mar. 31, 2015

Disclosure Text Block Supplement [Abstract]

Schedule of Amounts Recognized in Balance Sheet [Table Text Block]

							Gross Amounts Not Offset in the Balance Sheet
	Gross Amounts of Recognized		Gross Amounts Offset in the Balance Sheet		Net Amounts Presented in the Balance Sheet		Financial Instruments		Collateral Posted			Net Amount
March 31, 2015	(In thousands)
Liabilities:
Securities sold under agreements to repurchase	$	400,000	$	-	$	400,000	$	-	$	(400,000	)	$	-
Derivatives	$	8,610	$	-	$	8,610	$	-	$	(8,610	)	$	-
December 31, 2014
Liabilities:
Securities sold under agreements to repurchase	$	450,000	$	-	$	450,000	$	-	$	(450,000	)	$	-
Derivatives	$	4,626	$	-	$	4,626	$	-	$	(4,626	)	$	-