Note 15 - Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Commitments to Extend Credit [Member]
Note 15 - Financial Instruments with Off-Balance Sheet Risk (Details) [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 172.0	$ 161.0
Standby Letters of Credit [Member]
Note 15 - Financial Instruments with Off-Balance Sheet Risk (Details) [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	$ 10.5	$ 13.3

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

No definition available.

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Period Type:	instant