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Fair Value Measurements - Additional Quantitative Information (Details) - USD ($) | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans | $ 44,612,000 | $ 50,182,000
Non-recurring basis |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans | 7,817,000 | 10,999,000
OREO | 84,000 | 55,000
Bank property held for sale | 1,832,000 | 1,832,000
Non-recurring basis | Level 3 |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans | 7,817,000 | 10,999,000
OREO | 84,000 | 55,000
Bank property held for sale | 1,832,000 | 1,832,000
Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans | 7,817,000 | 10,999,000
Non-recurring basis | Level 3 | Appraisal of collateral | OREO |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
OREO | 84,000 | 55,000
Non-recurring basis | Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Bank property held for sale | $ 1,832,000 | $ 1,832,000
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans (percent) | (3.4) | (3.3)
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans (percent) | (100.0) | (100.0)
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | Impaired loans | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Impaired loans |  | $ (24.1)
Impaired loans (percent) | (29.4) |
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
OREO (percent) | (25.0) | (25.0)
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
OREO (percent) | (100.0) | (100.0)
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral | OREO | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
OREO (percent) | (61.8) | (65.0)
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Minimum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Bank property held for sale |  | $ 0.0
Bank property held for sale (percent) | 0.0 |
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Maximum |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Bank property held for sale |  | $ (35.1)
Bank property held for sale (percent) | (35.1) |
Appraisal adjustments | Non-recurring basis | Level 3 | Appraisal of collateral or real estate listing price | Bank property held for sale | Weighted Average |  |
Fair Value Measurement Inputs and Valuation Techniques [Line Items] |  |
Bank property held for sale (percent) | (28.3) | (28.3)

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