Note 19 - Commitments and Credit Risk (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Letters of Credit Outstanding, Amount	$ 12,135,000	$ 15,965,000
Commercial Loans [Member] | Unused lines of Credit [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Other Commitment	68,066,000	47,599,000
Open End Consumer Lines [Member] | Unused lines of Credit [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Other Commitment	14,461,000	13,859,000
Commitments to Originate Fixed Rate Mortgages [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Other Commitment	$ 4,218,000	2,483,000
Commitment, Mortgage Loan Origination, Disbursed Period	30 days
Confirming Letters of Credit From FHLB [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Letters of Credit Outstanding, Amount	$ 20,028,000	$ 23,884,000
Minimum [Member] | Standby Letters of Credit [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Debt Instrument, Term	1 year
Maximum [Member] | Standby Letters of Credit [Member]
Note 19 - Commitments and Credit Risk (Details) [Line Items]
Debt Instrument, Term	5 years