Fair Value Accounting and Measurement (Financial Assets Accounted For Fair Value On Nonrecurring Basis) (Details) (Fair Value, Measurements, Nonrecurring [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	$ 10,599	$ 17,755
Non-Covered Other Real Estate Owned Fair Value	10,970	11,233
Other Real Estate Owned, Fair Value Disclosure	2,663	2,442
Other Personal Property Owned, Fair Value Disclosure	210
Assets, Fair Value Disclosure	24,442	31,430
Losses During Period	8,750	9,574
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Non-Covered Other Real Estate Owned Fair Value	0	0
Other Real Estate Owned, Fair Value Disclosure	0	0
Other Personal Property Owned, Fair Value Disclosure	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	0	0
Non-Covered Other Real Estate Owned Fair Value	0	0
Other Real Estate Owned, Fair Value Disclosure	0	0
Other Personal Property Owned, Fair Value Disclosure	0
Assets, Fair Value Disclosure	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans	10,599	17,755
Non-Covered Other Real Estate Owned Fair Value	10,970	11,233
Other Real Estate Owned, Fair Value Disclosure	2,663	2,442
Other Personal Property Owned, Fair Value Disclosure	210
Assets, Fair Value Disclosure	24,442	31,430
Covered Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses During Period	1,032	644
Impaired Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses During Period	3,891	5,841
Other Personal Property Owned [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses During Period	39
Noncovered Loans [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses During Period	$ 3,788	$ 3,089