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Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding (Parentheticals) - London Interbank Offered Rate (LIBOR) [Member]
12 Months Ended
Dec. 31, 2014
First South Preferred Trust I [Member]  
Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding (Parentheticals) [Line Items]  
LIBOR margin 2.95%
Increase First South Preferred Trust I [Member]  
Note 23 - Junior Subordinated Debentures (Details) - Consolidated Debt Obligations Related to a Subsidiary Trust Holding (Parentheticals) [Line Items]  
LIBOR margin 2.95%