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Investment Securities (Details 2) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
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Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | $ 393,667 | $ 246,831
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 15,319 | 4,155
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 97,144 | 49,528
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 5,369 | 872
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value | 490,811 | 296,359
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 20,688 | 5,027
US Treasury Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 53,261 | 14,479
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 1,271 | 264
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 5,334 | 958
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 540 | 36
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value | 58,595 | 15,437
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 1,811 | 300
US Government-sponsored Enterprises Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 2,317 |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 182 |
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 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 | 2,317 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 182 |
Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 261,976 | 200,238
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 8,929 | 3,156
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 86,207 | 48,570
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 4,211 | 836
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value | 348,183 | 248,808
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 13,140 | 3,992
Small Business Administration pools [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 12,529 | 7,232
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 295 | 67
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 2,642 |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 42 |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value | 15,171 | 7,232
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 337 | 67
US States and Political Subdivisions Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 59,077 | 21,261
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 4,392 | 539
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value | 2,961 |
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 576 |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value | 62,038 | 21,261
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | 4,968 | 539
Corporate and other securities [Member] |  |
Marketable Securities [Line Items] |  |
Available-for-Sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value | 4,507 | 3,621
Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 250 | 129
Available-for-Sale Securities, Continuous Unrealized Loss Position, 12 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 | 4,507 | 3,621
Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss | $ 250 | $ 129

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