Note 7 - Loans (Details) - Troubled Debt Restructuring	6 Months Ended
	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($)
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	9	6
Pre-Modification Recorded Investment	$ 16,783,000	$ 9,883,000
Post-Modification Recorded Investment	16,635,000	9,883,000
Charge-offs	148,000
Special Reserve	$ 83,000	$ 52,000
Commercial Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	1	3
Pre-Modification Recorded Investment	$ 850,000	$ 8,490,000
Post-Modification Recorded Investment	850,000	8,490,000
Charge-offs	$ 598,000
Special Reserve		$ 20,000
Commercial Real Estate Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	4
Pre-Modification Recorded Investment	$ 14,411,000
Post-Modification Recorded Investment	14,411,000
Special Reserve	$ 40,000
Residential Mortgage and Equity Lines Portfolio Segment [Member]
Note 7 - Loans (Details) - Troubled Debt Restructuring [Line Items]
No. of Loans	4	3
Pre-Modification Recorded Investment	$ 1,522,000	$ 1,393,000
Post-Modification Recorded Investment	1,374,000	1,393,000
Charge-offs	148,000
Special Reserve	$ 43,000	$ 32,000