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Fair Value Measurements (Schedule Of Valuation Methodology And Unobservable Inputs) (Detail) - USD ($)
$ in Thousands
12 Months Ended
Jan. 13, 2015
Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates 16.50%  
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Other real estate owned   $ 652
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   8.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   0.00%
Fair Value, Measurements, Nonrecurring [Member] | Other Real Estate Owned [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   20.00%
Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Mortgage servicing assets   $ 33,568
Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   1.40%
Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   3.40%
Interest Rate Risk [Member] | Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] | Minimum [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Constant prepayment rate   7.40%
Interest Rate Risk [Member] | Fair Value, Measurements, Nonrecurring [Member] | Mortgage Servicing Rights [Member] | Maximum [Member] | Income Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Constant prepayment rate   32.40%
Nonperforming Financial Instruments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Fair Value, Inputs, Level 3 [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Impaired loans and leases   $ 19,644
Nonperforming Financial Instruments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   4.00%
Nonperforming Financial Instruments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Minimum [Member] | Market Approach Valuation Technique - Discount for cost to sell [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   0.00%
Nonperforming Financial Instruments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum [Member] | Market Approach Valuation Technique [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   15.00%
Nonperforming Financial Instruments [Member] | Fair Value, Measurements, Nonrecurring [Member] | Maximum [Member] | Market Approach Valuation Technique - Discount for cost to sell [Member]    
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Discount rates   8.00%