Loans (Summary Of Financial Receivable Nonaccrual Basis (Covered)) (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Covered loans	$ 200,000
Covered Loan
Covered loans	151,225,000	159,999,000	135,545,000
Covered Loan | Commercial, financial & agricultural
Covered loans	13,406,000	11,952,000	11,809,000
Covered Loan | Real estate - construction & development
Covered loans	28,225,000	30,977,000	31,131,000
Covered Loan | Real estate - commercial and farmland
Covered loans	71,271,000	75,458,000	55,771,000
Covered Loan | Real estate - residential
Covered loans	37,669,000	41,139,000	36,129,000
Covered Loan | Consumer installment loans
Covered loans	$ 654,000	$ 473,000	$ 705,000