Loans (Summary Of Covered Loans According To Loan Type) (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Covered loans	$ 601,737	$ 571,489	$ 486,489
Commercial, financial & agricultural
Covered loans	41,372	41,867	42,494
Real estate - construction & development
Covered loans	83,991	77,077	79,540
Real estate - commercial and farmland
Covered loans	322,393	321,257	229,924
Real estate - residential
Covered loans	150,683	127,644	129,721
Consumer installment loans
Covered loans	$ 3,298	$ 3,644	$ 4,810