Fair Value (Assets And Liabilities Measured At Fair Value On A Nonrecurring Basis (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2011	Dec. 31, 2010
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	$ 82,795	$ 109,643
Mortgage servicing rights	4,963	3,813
Other real estate owned	46,911	41,709
Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Mortgage servicing rights
Other real estate owned
Level 2 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Mortgage servicing rights	4,963	3,813
Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	82,795	109,643
Other real estate owned	46,911	41,709
Commercial, Financial And Agricultural [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	11,731	8,276
Commercial, Financial And Agricultural [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Commercial, Financial And Agricultural [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	11,731	8,276
Construction Real Estate - Vision Commercial Land And Development [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	25,317	42,274
Construction Real Estate - Vision Commercial Land And Development [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Construction Real Estate - Vision Commercial Land And Development [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	25,317	42,274
Construction Real Estate - Remaining Commercial [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	10,178	10,465
Construction Real Estate - Remaining Commercial [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Construction Real Estate - Remaining Commercial [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	10,178	10,465
Residential Real Estate Commercial [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	15,222	16,399
Residential Real Estate Commercial [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Residential Real Estate Commercial [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	15,222	16,399
Commercial Real Estate [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	20,347	32,229
Commercial Real Estate [Member] | Level 1 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value
Commercial Real Estate [Member] | Level 3 [Member]
Fair Value, Assets And Liabilities Measured On Nonrecurring Basis [Line Items]
Impaired loans carried at fair value, Fair value	$ 20,347	$ 32,229