Loans (Summary Of Financial Receivable Nonaccrual Basis (Non-Covered)) (Detail) (USD $)	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Non-covered loans	$ 200,000
Non-Covered Loans
Non-covered loans	44,421,000	70,823,000	60,545,000
Non-Covered Loans | Commercial, financial & agricultural
Non-covered loans	4,968,000	3,987,000	5,439,000
Non-Covered Loans | Real estate - construction & development
Non-covered loans	8,979,000	15,020,000	13,714,000
Non-Covered Loans | Real estate - commercial and farmland
Non-covered loans	13,728,000	35,385,000	24,205,000
Non-Covered Loans | Real estate - residential
Non-covered loans	15,542,000	15,498,000	16,625,000
Non-Covered Loans | Consumer installment loans
Non-covered loans	$ 1,204,000	$ 933,000	$ 562,000