Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications $ in Thousands	3 Months Ended
	Mar. 31, 2015 USD ($)
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	$ 1,061
Payment Deferral [Member]
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	1,061
Commercial Portfolio Segment [Member]
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	787
Commercial Portfolio Segment [Member] | Payment Deferral [Member]
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	787
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member]
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	274
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Individual Tax Identification Number Loan [Member] | Payment Deferral [Member]
Note 5 - Loans (Details) - Newly Restructured Loans and Types of Modifications [Line Items]
Financing receivable modifications	$ 274