Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013		Dec. 31, 2012		Jun. 30, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Not covered under loss share agreements in other real estate owned	$ 36,942	[1]	$ 43,513	[2]	$ 49,454	[1]	$ 50,399
Fair Value, Measurements, Nonrecurring | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	42,084		65,244		49,277
Impaired loans not covered by loss share agreements	42,940		51,644		82,865
Not covered under loss share agreements in other real estate owned	534		21,113		12,893
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets and Liabilities (Level 1 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0		0		0
Impaired loans not covered by loss share agreements	0		0		0
Not covered under loss share agreements in other real estate owned	0		0		0
Fair Value, Measurements, Nonrecurring | Quoted Prices for Similar Assets and Liabilities (Level 2 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	42,084		65,244		49,277
Impaired loans not covered by loss share agreements	0		0		0
Not covered under loss share agreements in other real estate owned	0		0		0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3 Inputs)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	0		0		0
Impaired loans not covered by loss share agreements	42,940		51,644		82,865
Not covered under loss share agreements in other real estate owned	$ 534		$ 21,113		$ 12,893

[1] Unaudited

[2] Derived from 2012 Annual Report on Form 10-K.