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Securities (Details 2) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | $ 1,051,043 | $ 718,367
Unrealized Losses, Less Than 12 Months | (90,193) | (10,925)
Fair Value, 12 Months or Longer | 134,960 | 74,575
Unrealized Losses, 12 Months or Longer | (15,906) | (2,812)
Fair Value, Total | 1,186,003 | 792,942
Unrealized Losses, Total | (106,099) | (13,737)
U.S. Treasury and U.S. government sponsored entities |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 94,866 | 81,236
Unrealized Losses, Less Than 12 Months | (8,125) | (1,960)
Fair Value, 12 Months or Longer | 9,753 | 8,271
Unrealized Losses, 12 Months or Longer | (994) | (378)
Fair Value, Total | 104,619 | 89,507
Unrealized Losses, Total | (9,119) | (2,338)
State and political subdivisions |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 420,523 | 103,651
Unrealized Losses, Less Than 12 Months | (38,939) | (1,020)
Fair Value, 12 Months or Longer | 14,420 | 10,020
Unrealized Losses, 12 Months or Longer | (2,294) | (185)
Fair Value, Total | 434,943 | 113,671
Unrealized Losses, Total | (41,233) | (1,205)
Mortgage-backed securities - residential |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 511,033 | 525,792
Unrealized Losses, Less Than 12 Months | (42,169) | (7,872)
Fair Value, 12 Months or Longer | 110,117 | 55,569
Unrealized Losses, 12 Months or Longer | (12,548) | (2,222)
Fair Value, Total | 621,150 | 581,361
Unrealized Losses, Total | (54,717) | (10,094)
Collateralized mortgage obligations - residential |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 18,856 | 7,270
Unrealized Losses, Less Than 12 Months | (735) | (71)
Fair Value, 12 Months or Longer | 0 | 0
Unrealized Losses, 12 Months or Longer | 0 | 0
Fair Value, Total | 18,856 | 7,270
Unrealized Losses, Total | (735) | (71)
Corporate bonds |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 1,009 | 418
Unrealized Losses, Less Than 12 Months | (38) | (2)
Fair Value, 12 Months or Longer | 670 | 715
Unrealized Losses, 12 Months or Longer | (70) | (27)
Fair Value, Total | 1,679 | 1,133
Unrealized Losses, Total | (108) | $ (29)
Small Business Administration |  |
Investment securities with unrealized losses |  |
Fair Value, Less Than 12 Months | 4,756 |
Unrealized Losses, Less Than 12 Months | (187) |
Fair Value, 12 Months or Longer | 0 |
Unrealized Losses, 12 Months or Longer | 0 |
Fair Value, Total | 4,756 |
Unrealized Losses, Total | $ (187) |

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