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Investment Securities (Details 2) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020
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Marketable Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | $ 136,786 | $ 26,228
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 3,664 | 228
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 2,673 | 2,737
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 41 | 40
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 139,459 | 28,965
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 3,705 | 268
US Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 15,011 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 704 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 15,011 |
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 704 |
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 99,435 | 21,298
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1,842 | 152
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,374 | 1,414
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 25 | 33
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 100,809 | 22,712
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 1,867 | 185
Small Business Administration pools [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 486 |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 2 |
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 1,299 | 1,323
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 16 | 7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1,785 | 1,323
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | 18 | 7
US States and Political Subdivisions Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 21,854 | 4,930
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1,116 | 76
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value |  |
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 21,854 | 4,930
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss | $ 1,116 | $ 76

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