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v3.23.3

Securities - Schedule of Fair Value of Securities (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Available for sale |  |
Amortized Cost | $ 1,024,622 | $ 1,137,702
Gross Unrealized Gains | 338 | 335
Gross Unrealized Losses | (159,792) | (140,479)
Fair Value | 865,168 | 997,558
Held to maturity |  |
Amortized Cost | 1,966,483 | 2,022,748
Gross Unrealized Gains | 15 | 374
Gross Unrealized Losses | (409,653) | (341,813)
Fair Value | 1,556,845 | 1,681,309
U.S. Treasury and federal agencies |  |
Available for sale |  |
Amortized Cost | 293,785 | 294,329
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (27,935) | (27,150)
Fair Value | 265,850 | 267,179
Held to maturity |  |
Amortized Cost | 287,561 | 295,250
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (53,553) | (49,237)
Fair Value | 234,008 | 246,013
State and municipal |  |
Available for sale |  |
Amortized Cost | 425,096 | 505,006
Gross Unrealized Gains | 0 | 140
Gross Unrealized Losses | (84,784) | (71,602)
Fair Value | 340,312 | 433,544
Held to maturity |  |
Amortized Cost | 1,101,933 | 1,127,669
Gross Unrealized Gains | 15 | 374
Gross Unrealized Losses | (243,639) | (192,458)
Fair Value | 858,309 | 935,585
Federal agency collateralized mortgage obligations |  |
Available for sale |  |
Amortized Cost | 23,210 | 33,011
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (1,897) | (1,796)
Fair Value | 21,313 | 31,215
Held to maturity |  |
Amortized Cost | 52,573 | 56,564
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (9,896) | (8,865)
Fair Value | 42,677 | 47,699
Federal agency mortgage-backed pools |  |
Available for sale |  |
Amortized Cost | 200,728 | 220,963
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (34,839) | (30,307)
Fair Value | 165,889 | 190,656
Held to maturity |  |
Amortized Cost | 328,410 | 343,953
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (64,353) | (56,714)
Fair Value | 264,057 | 287,239
Private labeled mortgage-backed pools |  |
Held to maturity |  |
Amortized Cost | 32,992 | 35,466
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (5,694) | (5,493)
Fair Value | 27,298 | 29,973
Corporate notes |  |
Available for sale |  |
Amortized Cost | 81,803 | 84,393
Gross Unrealized Gains | 338 | 195
Gross Unrealized Losses | (10,337) | (9,624)
Fair Value | 71,804 | 74,964
Held to maturity |  |
Amortized Cost | 163,014 | 163,846
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (32,518) | (29,046)
Fair Value | $ 130,496 | $ 134,800

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