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Estimated Fair Values (Narrative) (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 USD ($) | Mar. 31, 2020 USD ($) | Dec. 31, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Transfers from level 2 to level 3 | $ 0 | $ 1,800,000 |
Gains (Losses) from fair value changes on originated loans held for sale | (2,700,000) | $ 1,200,000 |
Originated loans held for sale, 90 days or more past due | 0 |  | $ 0
Fair Value, Measurements, Nonrecurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Liability measured at fair value on nonrecurring basis | $ 0 |  | $ 0
Discount Rate | Minimum |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans held-for-sale, measurement input | 0.06 |  |
OREO, measurement input | 0.06 |  |
Discount Rate | Maximum |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans held-for-sale, measurement input | 0.10 |  |
OREO, measurement input | 0.15 |  |
Discount Rate | Weighted Average |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans held-for-sale, measurement input | 0.0681 |  |
OREO, measurement input | 0.0876 |  |

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