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Disclosures about Fair Value of Assets and Liabilities - Qualitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements, Other than Goodwill (Details) - Significant Unobservable Inputs (Level 3) $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 31, 2020 USD ($) consecutivePayment | Jun. 30, 2019 | Dec. 31, 2019 USD ($) consecutivePayment
Collateral dependent loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Fair Value | $ | $ 7,959 |  |
Valuation Technique | Collateral based measurement |  |
Unobservable Inputs | Discount to reflect current market conditions and ultimate collectibility |  |
Impaired loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Fair Value | $ |  |  | $ 6,806
Valuation Technique |  | Collateral based measurement |
Unobservable Inputs |  | Discount to reflect current market conditions and ultimate collectibility |
Mortgage servicing rights |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Fair Value | $ | $ 14,160 |  | $ 14,327
Valuation Technique | Discounted cash flows | Discounted cash flows |
Unobservable Inputs | Discount rate,Constant prepayment rate,Probability of default | Discount rate,Constant prepayment rate,Probability of default |
Minimum | Collateral dependent loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability | 0.00% |  |
Minimum | Impaired loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability |  |  | 0.00%
Minimum | Mortgage servicing rights | Measurement Input, Discount Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.086) |  | (0.087)
Minimum | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.106) |  | (0.102)
Minimum | Mortgage servicing rights | Measurement Input, Default Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.000) |  | (0.001)
Maximum | Collateral dependent loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability | 100.00% |  |
Maximum | Impaired loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability |  |  | 100.00%
Maximum | Mortgage servicing rights | Measurement Input, Discount Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.087) |  | (0.090)
Maximum | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.204) |  | (0.198)
Maximum | Mortgage servicing rights | Measurement Input, Default Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.024) |  | (0.029)
Weighted Average | Collateral dependent loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability | 16.80% |  |
Weighted Average | Impaired loans |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Discount to reflect current market conditions and ultimate collectability |  |  | 7.40%
Weighted Average | Mortgage servicing rights | Measurement Input, Discount Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.086) |  | (0.087)
Weighted Average | Mortgage servicing rights | Measurement Input, Constant Prepayment Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.127) |  | (0.122)
Weighted Average | Mortgage servicing rights | Measurement Input, Default Rate |  |  |
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items] |  |  |
Unobservable inputs | (0.007) |  | (0.007)

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