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Investment Securities - Available for Sale Securities Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Fair Value |  |
Less Than 12 Months | $ 252,640 | $ 688,212
12 Months or Greater | 162,216 | 27,099
Total | 414,856 | 715,311
Gross Unrealized Losses |  |
Less Than 12 Months | (26,836) | (11,044)
12 Months or Greater | (30,952) | (865)
Total | (57,788) | (11,909)
U.S. treasury securities |  |
Fair Value |  |
Less Than 12 Months | 841 | 87,302
12 Months or Greater | 789 | 0
Total | 1,630 | 87,302
Gross Unrealized Losses |  |
Less Than 12 Months | (7) | (1,087)
12 Months or Greater | (5) | 0
Total | (12) | (1,087)
U.S. agency |  |
Fair Value |  |
Less Than 12 Months | 4,918 | 10,969
12 Months or Greater | 0 | 0
Total | 4,918 | 10,969
Gross Unrealized Losses |  |
Less Than 12 Months | (487) | (140)
12 Months or Greater | 0 | 0
Total | (487) | (140)
Asset backed securities |  |
Fair Value |  |
Less Than 12 Months | 14,785 |
12 Months or Greater | 11,387 |
Total | 26,172 |
Gross Unrealized Losses |  |
Less Than 12 Months | (262) |
12 Months or Greater | (485) |
Total | (747) |
State, county & municipal securities |  |
Fair Value |  |
Less Than 12 Months | 50,600 | 180,551
12 Months or Greater | 52,690 | 5,970
Total | 103,290 | 186,521
Gross Unrealized Losses |  |
Less Than 12 Months | (9,562) | (3,131)
12 Months or Greater | (13,620) | (225)
Total | (23,182) | (3,356)
Corporate debt securities |  |
Fair Value |  |
Less Than 12 Months | 26,326 | 31,977
12 Months or Greater | 15,086 | 0
Total | 41,412 | 31,977
Gross Unrealized Losses |  |
Less Than 12 Months | (2,538) | (265)
12 Months or Greater | (1,579) | 0
Total | (4,117) | (265)
Mortgage-backed securities |  |
Fair Value |  |
Less Than 12 Months | 155,170 | 377,413
12 Months or Greater | 82,264 | 21,129
Total | 237,434 | 398,542
Gross Unrealized Losses |  |
Less Than 12 Months | (13,980) | (6,421)
12 Months or Greater | (15,263) | (640)
Total | $ (29,243) | $ (7,061)

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