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Investment Securities - Schedule of Investment Securities in a Continuous Unrealized Loss Position (Details) $ in Thousands | Dec. 31, 2021 USD ($) security | Dec. 31, 2020 USD ($) security
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 636,389 | $ 15,019
12 Months or Longer | 8,829 | 0
Total | 645,218 | 15,019
Gross Unrealized Losses |  |
Less than 12 Months | 13,239 | 349
12 Months or Longer | 401 | 0
Total | $ 13,640 | $ 349
Number of Securities | security | 161 | 9
U.S. Treasury |  |
Fair Value |  |
Less than 12 Months | $ 999 |
12 Months or Longer | 0 |
Total | 999 |
Gross Unrealized Losses |  |
Less than 12 Months | 1 |
12 Months or Longer | 0 |
Total | $ 1 |
Number of Securities | security | 1 |
U.S. Government-sponsored agency securities |  |
Fair Value |  |
Less than 12 Months | $ 68,524 |
12 Months or Longer | 0 |
Total | 68,524 |
Gross Unrealized Losses |  |
Less than 12 Months | 1,545 |
12 Months or Longer | 0 |
Total | $ 1,545 |
Number of Securities | security | 8 |
State and municipal |  |
Fair Value |  |
Less than 12 Months | $ 138,187 | $ 5,368
12 Months or Longer | 505 | 0
Total | 138,692 | 5,368
Gross Unrealized Losses |  |
Less than 12 Months | 894 | 246
12 Months or Longer | 4 | 0
Total | $ 898 | $ 246
Number of Securities | security | 103 | 4
U.S. Government-sponsored mortgage-backed securities |  |
Fair Value |  |
Less than 12 Months | $ 427,687 | $ 9,651
12 Months or Longer | 8,324 | 0
Total | 436,011 | 9,651
Gross Unrealized Losses |  |
Less than 12 Months | 10,791 | 103
12 Months or Longer | 397 | 0
Total | $ 11,188 | $ 103
Number of Securities | security | 48 | 5
Corporate obligations |  |
Fair Value |  |
Less than 12 Months | $ 992 |
12 Months or Longer | 0 |
Total | 992 |
Gross Unrealized Losses |  |
Less than 12 Months | 8 |
12 Months or Longer | 0 |
Total | $ 8 |
Number of Securities | security | 1 |

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