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Fair Value of Assets and Liabilities - Valuation Assumptions (Details) | 9 Months Ended
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Sep. 30, 2017
Loans measured for impairment | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount rate | 7.00%
Other real estate owned | Market Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Estimated capital costs to complete improvements | 25.00%
Interest rate lock commitments | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Pull through rate | 92.79%
Minimum | Loans measured for impairment | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount rate | 25.00%
Minimum | Mortgage servicing rights | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount rate | 9.17%
Constant prepayment rate | 10.05%
Maximum | Loans measured for impairment | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount rate | 100.00%
Maximum | Mortgage servicing rights | Income Approach Valuation Technique |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |
Discount rate | 9.78%
Constant prepayment rate | 12.89%

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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Rate at which loans or a loan portfolio are expected to prepay principal balances, used as an input to measure fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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