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Investment Securities (Details 3) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | $ 16,667 | $ 128,982
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 983 | 6,066
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 257,402 | 194,279
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 26,461 | 19,339
Debt Securities, Available-for-Sale, Unrealized Loss Position | 274,069 | 323,261
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 27,444 | 25,405
US Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months |  | 28,827
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  | 1,032
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 17,550 | 27,156
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 3,223 | 3,537
Debt Securities, Available-for-Sale, Unrealized Loss Position | 17,550 | 55,983
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 3,223 | 4,569
US Government-sponsored Enterprises Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 2,008 | 2,074
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 492 | 426
Debt Securities, Available-for-Sale, Unrealized Loss Position | 2,008 | 2,074
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 492 | 426
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 10,028 | 81,961
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 815 | 4,435
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 225,640 | 159,227
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 21,373 | 14,679
Debt Securities, Available-for-Sale, Unrealized Loss Position | 235,668 | 241,188
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 22,188 | 19,114
Small Business Administration Securities [Member] |  |
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 4,765 | 16,066
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 47 | 453
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 8,052 | 2,592
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 515 | 177
Debt Securities, Available-for-Sale, Unrealized Loss Position | 12,817 | 18,658
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 562 | 630
Corporate And Other Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months | 1,874 | 2,128
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 121 | 146
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer | 4,152 | 3,230
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 858 | 520
Debt Securities, Available-for-Sale, Unrealized Loss Position | 6,026 | 5,358
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | $ 979 | $ 666

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