Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other Real Estate, Non Covered	$ 60,358		$ 70,454	$ 35,151		$ 36,898
Other Real Estate, Covered	12,890		22,982	40,136		47,081
Mortgage servicing rights	18,162	$ 16,436	16,688	$ 0	$ 0	$ 16
Fair Value, Measurements, Nonrecurring | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired loans not covered by loss share agreements	70,446		73,170
Other Real Estate, Non Covered	22,644		40,714
Other Real Estate, Covered	3,749		17,664
Mortgage servicing rights	221		13,562
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]
Impaired loans not covered by loss share agreements	0		0
Other Real Estate, Non Covered	0		0
Other Real Estate, Covered	0		0
Mortgage servicing rights	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]
Impaired loans not covered by loss share agreements	0		0
Other Real Estate, Non Covered	0		0
Other Real Estate, Covered	0		0
Mortgage servicing rights	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]
Impaired loans not covered by loss share agreements	70,446		73,170
Other Real Estate, Non Covered	22,644		40,714
Other Real Estate, Covered	3,749		17,664
Mortgage servicing rights	$ 221		$ 13,562