Note 10 - Borrowed Funds (Tables)

12 Months Ended

Dec. 31, 2013

Debt Disclosure [Abstract]

Schedule Of Long Term Securities Sold Under Agreements To Repurchase [Table Text Block]

(Dollars in millions)	Fixed-to-floating									Floating-to-fixed						Total
Rate type	Float Rate									Fixed Rate
Rate index	8% minus 3 month LIBOR
Maximum rate		3.75	%		3.50	%		3.50	%
Minimum rate		0.0	%		0.0	%		0.0	%
No. of agreements		1			2			3			1			4			11
Amount	$	50.0		$	100.0		$	150.0		$	100.0		$	200.0		$	600.0
Weighted average rate		3.75	%		3.50	%		3.50	%		4.78	%		5.00	%		4.24	%
Final maturity	2014			2014			2015			2014			2017

Schedule of Repurchase Agreements [Table Text Block]

Maturity	No. of Agreements		Amount (In thousands)		Weighted Average Interest Rate
1 year to 3 years		1	$	50,000		2.69	%
3 years to 5 years		3	$	150,000		2.81	%
Total		4	$	200,000		2.78	%

Summary Of Comparative Data Of Securities Sold Under Agreements To Repurchase [Table Text Block]

	2013			2012			2011
	(Dollars in thousands)
Average amount outstanding during the year (1)	$	972,329		$	1,361,475		$	1,448,363
Maximum amount outstanding at month-end (2)		1,200,000			1,400,000			1,559,000
Balance, December 31		800,000			1,250,000			1,400,000
Rate, December 31		3.87	%		3.84	%		4.14	%
Weighted average interest rate for the year		3.88	%		4.09	%		4.19	%

Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank [Table Text Block]

	2013					2012
Maturity	Amount (In thousands)		Weighted Average Interest Rate			Amount (In thousands)		Weighted Average Interest Rate
Within 90 days	$	475,000		0.06	%	$	125,000		0.28	%
4 - 5 years		46,200		1.24	%		21,200		1.38	%
	$	521,200		0.17	%	$	146,200		0.44	%