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Investments, Gross Unrealized Losses and Fair Value and Net Unrealized Gains (Losses) (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2019 USD ($) Security | Sep. 30, 2018 USD ($) | Sep. 30, 2019 USD ($) Security | Sep. 30, 2018 USD ($) | Dec. 31, 2018 USD ($)
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |  |  |  |
Less than twelve months, Fair value | $ 37,549 |  | $ 37,549 |  | $ 25,180
Twelve months or greater, Fair value | 40,310 |  | 40,310 |  | 126,094
Total, Fair value | 77,859 |  | 77,859 |  | 151,274
Less than twelve months, Gross unrealized losses | (128) |  | (128) |  | (76)
Twelve months or greater, Gross unrealized losses | (133) |  | (133) |  | (1,908)
Total, Gross Unrealized Losses | $ (261) |  | $ (261) |  | (1,984)
Number of securities owned with fair value less than cost | Security | 48 |  | 48 |  |
Equity securities [Abstract] |  |  |  |  |
Net gains (losses) recognized in equity securities during the period | $ 29 | $ (4) | $ 70 | $ 9 |
Less: Net gains realized on the sale of equity securities during the period | 0 | 0 | 0 | 0 |
Net unrealized gains (losses) | 29 | $ (4) | 70 | $ 9 |
Investment securities pledged as collateral | 220,800 |  | 220,800 |  | 221,200
U.S. Agency Securities [Member] |  |  |  |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |  |  |  |
Less than twelve months, Fair value | 13,096 |  | 13,096 |  | 5,981
Twelve months or greater, Fair value | 26,192 |  | 26,192 |  | 52,673
Total, Fair value | 39,288 |  | 39,288 |  | 58,654
Less than twelve months, Gross unrealized losses | (44) |  | (44) |  | (5)
Twelve months or greater, Gross unrealized losses | (53) |  | (53) |  | (635)
Total, Gross Unrealized Losses | (97) |  | (97) |  | (640)
U.S. Treasury Securities [Member] |  |  |  |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |  |  |  |
Less than twelve months, Fair value | 1,989 |  | 1,989 |  | 4,948
Twelve months or greater, Fair value | 0 |  | 0 |  | 28,410
Total, Fair value | 1,989 |  | 1,989 |  | 33,358
Less than twelve months, Gross unrealized losses | (1) |  | (1) |  | (31)
Twelve months or greater, Gross unrealized losses | 0 |  | 0 |  | (424)
Total, Gross Unrealized Losses | (1) |  | (1) |  | (455)
Obligations of State and Political Subdivisions [Member] |  |  |  |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |  |  |  |
Less than twelve months, Fair value | 2,185 |  | 2,185 |  | 8,979
Twelve months or greater, Fair value | 1,519 |  | 1,519 |  | 12,441
Total, Fair value | 3,704 |  | 3,704 |  | 21,420
Less than twelve months, Gross unrealized losses | (15) |  | (15) |  | (22)
Twelve months or greater, Gross unrealized losses | (2) |  | (2) |  | (155)
Total, Gross Unrealized Losses | (17) |  | (17) |  | (177)
Mortgage-backed Securities in Government Sponsored Entities [Member] |  |  |  |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |  |  |  |
Less than twelve months, Fair value | 20,279 |  | 20,279 |  | 5,272
Twelve months or greater, Fair value | 12,599 |  | 12,599 |  | 32,570
Total, Fair value | 32,878 |  | 32,878 |  | 37,842
Less than twelve months, Gross unrealized losses | (68) |  | (68) |  | (18)
Twelve months or greater, Gross unrealized losses | (78) |  | (78) |  | (694)
Total, Gross Unrealized Losses | $ (146) |  | $ (146) |  | $ (712)

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