Note 14 - Financial Instruments with Off-balance Sheet Risk (Details) - Financial Instruments Outstanding Representing Credit Risk - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Commitments to Extend Credit [Member]
Financial instruments whose contract amounts represent credit risk:
Off balance sheet liability, amount	$ 125,934	$ 144,578
Standby Letters of Credit 1 [Member]
Financial instruments whose contract amounts represent credit risk:
Off balance sheet liability, amount	15,248	14,677
Interest Rate Lock Commitments [Member]
Financial instruments whose contract amounts represent credit risk:
Off balance sheet liability, amount	$ 17,571	$ 10,248