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v3.23.2

Securities - Fair Value and Age of Gross Unrealized Losses of Debt Securities (Details) $ in Thousands | Jun. 30, 2023 USD ($) security | Dec. 31, 2022 USD ($) security
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Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 38 | 116
Fair Value, Less Than 12 Months | $ 215,261 | $ 663,656
Unrealized Losses, Less Than 12 Months | $ (7,697) | $ (46,120)
Number of Securities, 12 Months or More | security | 110 | 31
Fair Value, 12 Months or More | $ 746,440 | $ 308,067
Unrealized Losses, 12 Months or More | $ (94,768) | $ (56,462)
Number of Securities, Total | security | 148 | 147
Fair Value, Total | $ 961,701 | $ 971,723
Unrealized Losses, Total | $ (102,465) | $ (102,582)
U.S. Treasury securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 2 | 6
Fair Value, Less Than 12 Months | $ 19,225 | $ 57,057
Unrealized Losses, Less Than 12 Months | $ (445) | $ (3,363)
Number of Securities, 12 Months or More | security | 12 | 8
Fair Value, 12 Months or More | $ 112,010 | $ 74,638
Unrealized Losses, 12 Months or More | $ (13,178) | $ (10,358)
Number of Securities, Total | security | 14 | 14
Fair Value, Total | $ 131,235 | $ 131,695
Unrealized Losses, Total | $ (13,623) | $ (13,721)
Obligations of U.S. government corporations and agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 0 | 6
Fair Value, Less Than 12 Months | $ 0 | $ 41,811
Unrealized Losses, Less Than 12 Months | $ 0 | $ (1,668)
Number of Securities, 12 Months or More | security | 6 | 0
Fair Value, 12 Months or More | $ 41,865 | $ 0
Unrealized Losses, 12 Months or More | $ (1,546) | $ 0
Number of Securities, Total | security | 6 | 6
Fair Value, Total | $ 41,865 | $ 41,811
Unrealized Losses, Total | $ (1,546) | $ (1,668)
Collateralized mortgage obligations of U.S. government corporations and agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 16 | 47
Fair Value, Less Than 12 Months | $ 143,488 | $ 296,509
Unrealized Losses, Less Than 12 Months | $ (6,212) | $ (28,153)
Number of Securities, 12 Months or More | security | 47 | 13
Fair Value, 12 Months or More | $ 285,401 | $ 112,902
Unrealized Losses, 12 Months or More | $ (50,030) | $ (25,682)
Number of Securities, Total | security | 63 | 60
Fair Value, Total | $ 428,889 | $ 409,411
Unrealized Losses, Total | $ (56,242) | $ (53,835)
Residential mortgage-backed securities of U.S. government corporations and agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 14 | 25
Fair Value, Less Than 12 Months | $ 179 | $ 7,143
Unrealized Losses, Less Than 12 Months | $ (2) | $ (589)
Number of Securities, 12 Months or More | security | 14 | 3
Fair Value, 12 Months or More | $ 39,421 | $ 34,223
Unrealized Losses, 12 Months or More | $ (7,178) | $ (7,245)
Number of Securities, Total | security | 28 | 28
Fair Value, Total | $ 39,600 | $ 41,366
Unrealized Losses, Total | $ (7,180) | $ (7,834)
Commercial mortgage-backed securities of U.S. government corporations and agencies |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 3 | 30
Fair Value, Less Than 12 Months | $ 29,535 | $ 241,009
Unrealized Losses, Less Than 12 Months | $ (879) | $ (11,975)
Number of Securities, 12 Months or More | security | 31 | 7
Fair Value, 12 Months or More | $ 267,743 | $ 86,304
Unrealized Losses, 12 Months or More | $ (22,836) | $ (13,177)
Number of Securities, Total | security | 34 | 37
Fair Value, Total | $ 297,278 | $ 327,313
Unrealized Losses, Total | $ (23,715) | $ (25,152)
Obligations of states and political subdivisions |  |
Debt Securities, Available-for-sale [Line Items] |  |
Number of Securities, Less Than 12 Months | security | 3 | 2
Fair Value, Less Than 12 Months | $ 22,834 | $ 20,127
Unrealized Losses, Less Than 12 Months | $ (159) | $ (372)
Number of Securities, 12 Months or More | security | 0 | 0
Fair Value, 12 Months or More | $ 0 | $ 0
Unrealized Losses, 12 Months or More | $ 0 | $ 0
Number of Securities, Total | security | 3 | 2
Fair Value, Total | $ 22,834 | $ 20,127
Unrealized Losses, Total | $ (159) | $ (372)

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