XML 140 R124.htm IDEA: XBRL DOCUMENT v3.8.0.1
Fair Value Measurement - Summary of Unobservable Inputs Used in Fair Value Measurements on Recurring Basis Categorized Within Level 3 of Fair Value Hierarchy (Details) - Fair Value, Measurements, Recurring - Level 3
 12 Months Ended
Dec. 31, 2017
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Impact to Valuation from an Increased or Higher Input Value Decrease
Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Discount rate 9.90%
Expected weighted average loan life 2 months 12 days
Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Discount rate 18.40%
Expected weighted average loan life 8 years 2 months 12 days
Weighted Average  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Discount rate 13.80%
Expected weighted average loan life 5 years 9 months 18 days
Obligations of States, Municipalities, and Political Subdivisions  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Valuation Technique Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value Decrease
Obligations of States, Municipalities, and Political Subdivisions | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 2.20%
Obligations of States, Municipalities, and Political Subdivisions | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 2.40%
Obligations of States, Municipalities, and Political Subdivisions | Weighted Average  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 2.30%
Single Issuer Trust Preferred  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Valuation Technique Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value Decrease
Single Issuer Trust Preferred | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 7.50%
Single Issuer Trust Preferred | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 9.90%
Single Issuer Trust Preferred | Weighted Average  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Probability of default 8.90%
Servicing Assets  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Valuation Technique Discounted cash flow
Impact to Valuation from an Increased or Higher Input Value Decrease
Servicing Assets | Minimum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Prepayment speeds 1.60%
Servicing Assets | Maximum  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Prepayment speeds 9.90%
Servicing Assets | Weighted Average  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]  
Prepayment speeds 8.60%