Note 5 - Loans (Details) - Troubled Debt Restructurings With Subsequent Default $ in Thousands	12 Months Ended
	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
Note 5 - Loans (Details) - Troubled Debt Restructurings With Subsequent Default [Line Items]
Number of contracts	3	9
Recorded Investment	$ 2,032	$ 591
Commercial Portfolio Segment [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings With Subsequent Default [Line Items]
Number of contracts	1
Recorded Investment	$ 1,923
Residential Portfolio Segment [Member] | Individual Tax Identification Number Loan [Member] | Real Estate Loan [Member]
Note 5 - Loans (Details) - Troubled Debt Restructurings With Subsequent Default [Line Items]
Number of contracts	2	9
Recorded Investment	$ 109	$ 591