Fair Value Measurement (Fair Value Assets And Liabilities Measured On Nonrecurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total investment securities, held to maturity	$ 5,364	$ 4,759
Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	48,018	78,216
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	48,018	78,216
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total investment securities, held to maturity		487
Residential Mortgage-Backed Securities And Collateralized Mortgage Obligations [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Total investment securities, held to maturity		487
Non-Covered Loans And Leases [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	30,589	53,847
Non-Covered Loans And Leases [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	30,589	53,847
Non-Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	8,301	11,321
Non-Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	8,301	11,321
Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	9,128	12,561
Covered Other Real Estate Owned [Member] | Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, nonrecurring	$ 9,128	$ 12,561