Note 2 - Cash and Cash Equivalents (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Note 2 - Cash and Cash Equivalents (Details) [Line Items]
Average Reserve Balances Required to be Maintained With Federal Bank	$ 0	$ 6,500,000
Average Excess Balances Required to be Maintained With Federal Reserve Bank	170,100,000	136,300,000
Interest Rate Swap [Member]
Note 2 - Cash and Cash Equivalents (Details) [Line Items]
Margin Deposit Assets	$ 7,500,000