Fair Value (Assets And Liabilities Measured At Fair Value On A Nonrecurring Basis (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Impaired loans carried at fair value, Fair value	$ 97,608	$ 111,257
Mortgage servicing rights	2,526	3,813
Other real estate owned	47,997	44,325
Commercial Real Estate [Member]
Impaired loans carried at fair value, Fair value	23,353	32,354
Commercial Real Estate [Member] | Level 3 [Member]
Impaired loans carried at fair value, Fair value	23,353	32,354
Commercial, Financial And Agricultural [Member]
Impaired loans carried at fair value, Fair value	15,760	8,276
Commercial, Financial And Agricultural [Member] | Level 3 [Member]
Impaired loans carried at fair value, Fair value	15,760	8,276
Construction Real Estate - Vision Commercial Land And Development [Member]
Impaired loans carried at fair value, Fair value	34,437	45,121
Construction Real Estate - Vision Commercial Land And Development [Member] | Level 3 [Member]
Impaired loans carried at fair value, Fair value	34,437	45,121
Construction Real Estate - Remaining Commercial [Member]
Impaired loans carried at fair value, Fair value	11,767	10,202
Construction Real Estate - Remaining Commercial [Member] | Level 3 [Member]
Impaired loans carried at fair value, Fair value	11,767	10,202
Residential Real Estate Commercial [Member]
Impaired loans carried at fair value, Fair value	12,291	15,304
Residential Real Estate Commercial [Member] | Level 3 [Member]
Impaired loans carried at fair value, Fair value	12,291	15,304
Level 2 [Member]
Mortgage servicing rights	2,526	3,813
Level 3 [Member]
Impaired loans carried at fair value, Fair value	97,608	111,257
Other real estate owned	$ 47,997	$ 44,325