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Investments, Gross Unrealized Losses and Fair Value and Net Unrealized Gains (Losses) (Details) $ in Thousands | Mar. 31, 2021 USD ($) Security | Dec. 31, 2020 USD ($)
--- | --- | ---
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |
Less than twelve months, Fair value | $ 103,878 | $ 33,727
Twelve months or greater, Fair value | 8,911 | 5,633
Total, Fair value | 112,789 | 39,360
Less than twelve months, Gross unrealized losses | (1,848) | (206)
Twelve months or greater, Gross unrealized losses | (126) | (38)
Total, Gross Unrealized Losses | $ (1,974) | (244)
Number of securities owned with fair value less than cost | Security | 88 |
U.S. Agency Securities [Member] |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |
Less than twelve months, Fair value | $ 27,104 | 13,720
Twelve months or greater, Fair value | 0 | 0
Total, Fair value | 27,104 | 13,720
Less than twelve months, Gross unrealized losses | (686) | (52)
Twelve months or greater, Gross unrealized losses | 0 | 0
Total, Gross Unrealized Losses | (686) | (52)
U.S. Treasury Securities [Member] |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |
Less than twelve months, Fair value | 12,444 | 0
Twelve months or greater, Fair value | 0 | 0
Total, Fair value | 12,444 | 0
Less than twelve months, Gross unrealized losses | (91) | 0
Twelve months or greater, Gross unrealized losses | 0 | 0
Total, Gross Unrealized Losses | (91) | 0
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 | 29,716 | 5,407
Twelve months or greater, Fair value | 3,361 | 0
Total, Fair value | 33,077 | 5,407
Less than twelve months, Gross unrealized losses | (346) | (55)
Twelve months or greater, Gross unrealized losses | (87) | 0
Total, Gross Unrealized Losses | (433) | (55)
Corporate Obligations [Member] |  |
Available-for-sale, Debt Securities, Fair Value and Gross Unrealized Losses [Abstract] |  |
Less than twelve months, Fair value | 495 | 0
Twelve months or greater, Fair value | 0 | 0
Total, Fair value | 495 | 0
Less than twelve months, Gross unrealized losses | (5) | 0
Twelve months or greater, Gross unrealized losses | 0 | 0
Total, Gross Unrealized Losses | (5) | 0
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 | 34,119 | 14,600
Twelve months or greater, Fair value | 5,550 | 5,633
Total, Fair value | 39,669 | 20,233
Less than twelve months, Gross unrealized losses | (720) | (99)
Twelve months or greater, Gross unrealized losses | (39) | (38)
Total, Gross Unrealized Losses | $ (759) | $ (137)

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