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Estimated Fair Values (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Asset transfers between Level 1 and Level 2 | $ 0 |
Asset transfers between Level 2 and Level 1 | 0 |
Liability transfers between Level 1 and Level 2 |  |
Liability transfers between Level 2 and Level 1 | $ 0 |
Minimum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Effective Interest Rate For Discounted Cash Flow |  | 2.00%
Discounts for collateral value estimates due to estimated holding and selling costs (percent) | 6.00% | 6.00%
Minimum | Discount Rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 6.00 |
OREO, measurement input | 6.00 |
Minimum | Effective Interest Rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 1.00 |
Maximum |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Effective Interest Rate For Discounted Cash Flow |  | 18.00%
Discounts for collateral value estimates due to estimated holding and selling costs (percent) | 11.00% | 11.00%
Maximum | Discount Rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 11.00 |
OREO, measurement input | 11.00 |
Maximum | Effective Interest Rate |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans held-for-sale, measurement input | 14.00 |
Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Liability measured at fair value on nonrecurring basis |  | $ 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 |
Corporate Bond Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Transfers from Level 2 to Level 3 | 59,700 |
Other Debt Obligations |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Transfers from Level 2 to Level 3 | $ 5,600 |

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