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Investment Securities - Unrealized Losses (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value |  |
Less than 12 Months | $ 756,153 | $ 334,687
12 Months or Longer | 45,842 | 32,267
Total | 801,995 | 366,954
Unrealized Losses |  |
Less than 12 Months | (44,251) | (4,435)
12 Months or Longer | (3,731) | (403)
Total | (47,982) | (4,838)
U.S. government and agency securities |  |
Fair Value |  |
Less than 12 Months | 38,002 | 14,828
12 Months or Longer | 1,553 | 0
Total | 39,555 | 14,828
Unrealized Losses |  |
Less than 12 Months | (1,764) | (176)
12 Months or Longer | (170) | 0
Total | (1,934) | (176)
Municipal securities |  |
Fair Value |  |
Less than 12 Months | 90,266 | 29,774
12 Months or Longer | 16,837 | 9,351
Total | 107,103 | 39,125
Unrealized Losses |  |
Less than 12 Months | (5,206) | (619)
12 Months or Longer | (2,007) | (235)
Total | (7,213) | (854)
Residential CMO and MBS |  |
Fair Value |  |
Less than 12 Months | 307,811 | 204,039
12 Months or Longer | 24,731 | 19,862
Total | 332,542 | 223,901
Unrealized Losses |  |
Less than 12 Months | (19,312) | (2,470)
12 Months or Longer | (1,432) | (123)
Total | (20,744) | (2,593)
Commercial CMO and MBS |  |
Fair Value |  |
Less than 12 Months | 307,598 | 83,283
12 Months or Longer | 1,717 | 1,936
Total | 309,315 | 85,219
Unrealized Losses |  |
Less than 12 Months | (17,695) | (1,161)
12 Months or Longer | (111) | (38)
Total | (17,806) | (1,199)
Other asset-backed securities |  |
Fair Value |  |
Less than 12 Months | 12,476 | 2,763
12 Months or Longer | 1,004 | 1,118
Total | 13,480 | 3,881
Unrealized Losses |  |
Less than 12 Months | (274) | (9)
12 Months or Longer | (11) | (7)
Total | $ (285) | $ (16)

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