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Fair Value Measurement - Qualitative Information For Level 3 Assets Measured At Fair Value On A Non-Recurring Basis (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Unobservable Inputs One | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair Value $ 13,580 $ 20,341
Valuation Methodology Appraisals Appraisals
Unobservable Inputs Discount for costs to sell Discount for costs to sell
Range of Inputs 7.00% 7.00%
Unobservable Inputs One | Other real estate owned    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Fair Value $ 45 $ 752
Valuation Methodology Appraisals Appraisals
Unobservable Inputs Discount for costs to sell Discount for costs to sell
Range of Inputs 7.00% 7.00%
Unobservable Inputs Two | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Unobservable Inputs Discount for quick sale Discount for quick sale
Range of Inputs 10.00%  
Unobservable Inputs Two | Minimum | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range of Inputs   10.00%
Unobservable Inputs Two | Maximum | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range of Inputs   40.00%
Unobservable Inputs Three | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Valuation Methodology Discounted cash flows Discounted cash flows
Unobservable Inputs Interest rates Interest rates
Unobservable Inputs Three | Minimum | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range of Inputs 4.75% 4.60%
Unobservable Inputs Three | Maximum | Impaired loans    
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]    
Range of Inputs 7.50% 7.50%