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Loans (Details 2) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Acquired Impaired Loans        
Balance, January 1 $ 148,337 $ 2,886 $ 2,865 $ 3,221
Balance, September 30 148,337 2,886 2,865 3,221
Peoples [Member]
       
Acquired Impaired Loans        
Balance, January 1 30,898       
Balance, September 30 30,898       
Waccamaw [Member]
       
Acquired Impaired Loans        
Balance, January 1 115,125       
Balance, September 30 115,125       
Other [Member]
       
Acquired Impaired Loans        
Balance, January 1 2,314 2,886    
Balance, September 30 $ 2,314 $ 2,886