Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding	Dec. 31, 2014 USD ($)
Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trust	$ 10,310,000
First South Preferred Trust I [Member]
Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trust	10,000,000
Increase First South Preferred Trust I [Member]
Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding [Line Items]
Junior subordinated debentures owed to unconsolidated subsidiary trust	$ 310,000