Note 9 - Borrowed Funds (Details) - Callable Securities Sold Under Agreements to Repurchase (Callable [Member], USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Fixed to Floating One Hundred Million With Two Agreements at Three Point Five Percent [Member]
Note 9 - Borrowed Funds (Details) - Callable Securities Sold Under Agreements to Repurchase [Line Items]
Maximum rate	3.50%
Minimum rate	0.00%
No. of agreements	2
Amount (in Dollars)	$ 100,000
Weighted average rate	3.50%
Final maturity	2014
Fixed to Floating Fifty Million With One Agreement at Three Point Five Percent [Member]
Note 9 - Borrowed Funds (Details) - Callable Securities Sold Under Agreements to Repurchase [Line Items]
Maximum rate	3.50%
Minimum rate	0.00%
No. of agreements	1
Amount (in Dollars)	50,000
Weighted average rate	3.50%
Final maturity	2015
Floating To Fixed Two Hundred Million [Member]
Note 9 - Borrowed Funds (Details) - Callable Securities Sold Under Agreements to Repurchase [Line Items]
No. of agreements	4
Amount (in Dollars)	200,000
Weighted average rate	5.00%
Final maturity	2017
Floating To Fixed Three Hundred Fifty Million [Member]
Note 9 - Borrowed Funds (Details) - Callable Securities Sold Under Agreements to Repurchase [Line Items]
No. of agreements	7
Amount (in Dollars)	$ 350,000
Weighted average rate	4.36%