Estimated Fair Values (Assets And Liabilities Carried At Fair Value On A Nonrecurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 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	$ 72,690	$ 70,454	$ 44,504	$ 36,898
Other Real Estate, Covered	17,302	22,982	41,855	47,081
Mortgage servicing rights	16,436	16,688	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	69,749	73,170
Other Real Estate, Non Covered	17,034	40,714
Other Real Estate, Covered	3,714	17,664
Mortgage servicing rights	14,225	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	69,749	73,170
Other Real Estate, Non Covered	17,034	40,714
Other Real Estate, Covered	3,714	17,664
Mortgage servicing rights	$ 14,225	$ 13,562