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Fair Value Measurements - Schedule of Fair Value Measurements (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018 | Dec. 31, 2017
--- | --- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | $ 160,949 | $ 161,730 | $ 155,620 |
Equity securities with readily determinable fair values | 1,872 | 1,839 | $ 1,760 | $ 1,793
Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Equity securities with readily determinable fair values | 1,872 | 1,839 |  |
Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 160,949 | 161,730 |  |
Equity securities with readily determinable fair values | 0 | 0 |  |
Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Equity securities with readily determinable fair values | 0 | 0 |  |
Recurring | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Equity securities with readily determinable fair values | 1,872 | 1,839 |  |
Recurring | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 160,949 | 161,730 |  |
Equity securities with readily determinable fair values | 0 | 0 |  |
Recurring | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Equity securities with readily determinable fair values | 0 | 0 |  |
Recurring | U.S. Government and agencies | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Recurring | U.S. Government and agencies | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 118,787 | 118,413 |  |
Recurring | U.S. Government and agencies | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Recurring | Mortgage-backed securities, residential | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Recurring | Mortgage-backed securities, residential | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 32,632 | 33,811 |  |
Recurring | Mortgage-backed securities, residential | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Recurring | State and municipal | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Recurring | State and municipal | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 9,530 | 9,506 |  |
Recurring | State and municipal | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 0 | 0 |  |
Nonrecurring | Collateral dependent impaired loans | Level 1 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impaired loans | 0 | 0 |  |
Nonrecurring | Collateral dependent impaired loans | Level 2 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impaired loans | 0 | 0 |  |
Nonrecurring | Collateral dependent impaired loans | Level 3 |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impaired loans | 3,858 | 3,883 |  |
Fair Value |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 160,949 | 161,730 |  |
Equity securities with readily determinable fair values | 1,872 | 1,839 |  |
Fair Value | Recurring |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 160,949 | 161,730 |  |
Equity securities with readily determinable fair values | 1,872 | 1,839 |  |
Fair Value | Recurring | U.S. Government and agencies |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 118,787 | 118,413 |  |
Fair Value | Recurring | Mortgage-backed securities, residential |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 32,632 | 33,811 |  |
Fair Value | Recurring | State and municipal |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Debt securities available for sale | 9,530 | 9,506 |  |
Fair Value | Nonrecurring | Collateral dependent impaired loans |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |
Impaired loans | $ 3,858 | $ 3,883 |  |

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