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v3.23.2

INVESTMENT SECURITIES - Available-for-Sale Portfolio (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2023 | Dec. 31, 2022
Available-for-Sale Portfolio |  |
Amortized Cost | $ 3,500,726 | $ 4,675,474
Gross Unrealized Gains | 606 | 565
Gross Unrealized Losses | 436,462 | 524,188
Fair Value | 3,064,870 | 4,151,851
Held-to-Maturity Portfolio |  |
Amortized Cost | 1,104,020 | 1,079,695
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 40,576 | 44,900
Fair Value | 1,063,444 | 1,034,795
Equity Securities, at Fair Value |  |
Amortized Cost | 251 | 251
Gross Unrealized Gains | 118 | 168
Gross Unrealized Losses | 0 | 0
Fair Value | 369 | 419
U.S. Treasury and agency securities |  |
Available-for-Sale Portfolio |  |
Amortized Cost | 2,529,014 | 3,660,546
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 339,169 | 417,009
Fair Value | 2,189,845 | 3,243,537
Held-to-Maturity Portfolio |  |
Amortized Cost | 1,094,267 | 1,079,695
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 40,454 | 44,900
Fair Value | 1,053,813 | 1,034,795
Obligations of state and political subdivisions |  |
Available-for-Sale Portfolio |  |
Amortized Cost | 529,922 | 549,118
Gross Unrealized Gains | 577 | 506
Gross Unrealized Losses | 38,536 | 45,327
Fair Value | 491,963 | 504,297
Government agency mortgage-backed securities |  |
Available-for-Sale Portfolio |  |
Amortized Cost | 422,521 | 444,689
Gross Unrealized Gains | 29 | 58
Gross Unrealized Losses | 57,044 | 60,114
Fair Value | 365,506 | 384,633
Held-to-Maturity Portfolio |  |
Amortized Cost | 9,753 | 0
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 122 | 0
Fair Value | 9,631 | 0
Corporate debt securities |  |
Available-for-Sale Portfolio |  |
Amortized Cost | 8,000 | 8,000
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | 903 | 886
Fair Value | 7,097 | 7,114
Government agency collateralized mortgage obligations |  |
Available-for-Sale Portfolio |  |
Amortized Cost | 11,269 | 13,121
Gross Unrealized Gains | 0 | 1
Gross Unrealized Losses | 810 | 852
Fair Value | 10,459 | $ 12,270
Held-to-Maturity Portfolio |  |
Fair Value | $ 0 |

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