Note 14 - Financial Instruments with Off-Balance Sheet Risk (Details) - Financial Instruments Outstanding Representing Credit Risk (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Commitments to Extend Credit [Member]
Financial instruments whose contract amounts represent credit risk:
Financial instruments whose contract amounts represents credit risk	$ 144,578	$ 133,573
Standby Letters of Credit [Member]
Financial instruments whose contract amounts represent credit risk:
Financial instruments whose contract amounts represents credit risk	14,677	15,215
Interest Rate Lock Commitments [Member]
Financial instruments whose contract amounts represent credit risk:
Financial instruments whose contract amounts represents credit risk	$ 10,089	$ 18,257