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Investment Securities - Unrealized Loss Positions (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
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Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 continuous months | $ 4,372 |
Greater than or equal to 12 continuous months | 0 |
Total Securities in a loss position | 4,372 |
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 continuous months | (38) |
Greater than or equal to 12 continuous months | 0 |
Held-to-maturity, gross unrealized losses | (38) |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 105,669 | $ 9,918
Available-for-sale, greater than 12 continuous months, fair value | 1,417 | 1,790
Available-for-sale, total securities in a loss position, fair value | 107,086 | 11,708
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | (2,441) | (25)
Available-for-sale, greater than 12 continuous months, unrealized loss | (46) | (55)
Available-for-sale, total securities in a loss position, unrealized loss | (2,487) | (80)
Marketable Securities, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Marketable securities, less than 12 continuous months, fair value | 110,041 | 9,918
Marketable securities, greater than 12 continuous months, fair value | 1,417 | 1,790
Marketable securities, total securities in a loss position, fair value | 111,458 | 11,708
Marketable Securities, Continuous Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Marketable securities, less than 12 continuous months, unrealized loss | (2,479) | (25)
Marketable securities, greater than 12 continuous months, unrealized loss | (46) | (55)
Marketable securities, total securities in a loss position, unrealized loss | (2,525) | (80)
MBS pass-through securities issued by FHLMC and FNMA |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 0 |
Available-for-sale, greater than 12 continuous months, fair value | 0 |
Available-for-sale, total securities in a loss position, fair value | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | 0 |
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 |
Available-for-sale, total securities in a loss position, unrealized loss | 0 |
SBA-backed securities |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 0 | 0
Available-for-sale, greater than 12 continuous months, fair value | 1,417 | 1,790
Available-for-sale, total securities in a loss position, fair value | 1,417 | 1,790
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | 0 | 0
Available-for-sale, greater than 12 continuous months, unrealized loss | (46) | (55)
Available-for-sale, total securities in a loss position, unrealized loss | (46) | (55)
CMOs issued by FNMA |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 0 |
Available-for-sale, greater than 12 continuous months, fair value | 0 |
Available-for-sale, total securities in a loss position, fair value | 0 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | 0 |
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 |
Available-for-sale, total securities in a loss position, unrealized loss | 0 |
CMOs issued by FHLMC |  |
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Less than 12 continuous months | 4,372 |
Greater than or equal to 12 continuous months | 0 |
Total Securities in a loss position | 4,372 |
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Less than 12 continuous months | (38) |
Greater than or equal to 12 continuous months | 0 |
Held-to-maturity, gross unrealized losses | (38) |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 33,740 | 5,975
Available-for-sale, greater than 12 continuous months, fair value | 0 | 0
Available-for-sale, total securities in a loss position, fair value | 33,740 | 5,975
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | (436) | (1)
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 | 0
Available-for-sale, total securities in a loss position, unrealized loss | (436) | (1)
Debentures of government- sponsored agencies |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 63,594 | 3,943
Available-for-sale, greater than 12 continuous months, fair value | 0 | 0
Available-for-sale, total securities in a loss position, fair value | 63,594 | 3,943
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | (1,738) | (24)
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 | 0
Available-for-sale, total securities in a loss position, unrealized loss | (1,738) | $ (24)
Obligations of state and political subdivisions |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 2,550 |
Available-for-sale, greater than 12 continuous months, fair value | 0 |
Available-for-sale, total securities in a loss position, fair value | 2,550 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | (65) |
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 |
Available-for-sale, total securities in a loss position, unrealized loss | (65) |
Corporate bonds |  |
Debt Securities, Available-For-Sale, Continuous Unrealized Loss Position, Fair Value [Abstract] |  |
Available-for-sale, less than 12 continuous months, fair value | 5,785 |
Available-for-sale, greater than 12 continuous months, fair value | 0 |
Available-for-sale, total securities in a loss position, fair value | 5,785 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] |  |
Available-for-sale, less than 12 continuous months, unrealized loss | (202) |
Available-for-sale, greater than 12 continuous months, unrealized loss | 0 |
Available-for-sale, total securities in a loss position, unrealized loss | $ (202) |

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