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Securities - Available for Sale Securities With Gross Unrealized Losses and Their Fair Value (Details) $ in Thousands | Sep. 30, 2023 USD ($) | Dec. 31, 2022 USD ($)
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Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 4 | 4
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 57,665 | $ 62,550
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 16,548 | 12,261
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 62,550
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | $ 12,261
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 57,665 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 16,548 |
Securities have been in a continuous unrealized loss position, number of positions | 177 | 166
Securities have been in a continuous unrealized loss position, fair value | $ 712,583 | $ 718,869
Securities have been in a continuous unrealized loss position, unrealized losses | 108,127 | 91,529
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 64,593 | 322,133
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2,879 | 18,711
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 647,990 | 396,736
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 105,248 | $ 72,818
Other Debt Obligations |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 3 | 3
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 51,031 | $ 55,561
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 15,322 | 11,375
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 55,561
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | $ 11,375
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 51,031 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 15,322 |
Securities have been in a continuous unrealized loss position, number of positions | 54 | 46
Securities have been in a continuous unrealized loss position, fair value | $ 375,054 | $ 335,100
Securities have been in a continuous unrealized loss position, unrealized losses | 24,185 | 21,489
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 62,395 | 218,024
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2,776 | 8,986
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 312,659 | 117,076
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 21,409 | $ 12,503
US States and Political Subdivisions Debt Securities [Member] |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 3 | 3
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 51,031 | $ 55,561
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 15,322 | 11,375
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 55,561
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | $ 11,375
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 51,031 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 15,322 |
US Government Agencies Debt Securities [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 8 | 7
Securities have been in a continuous unrealized loss position, fair value | $ 74,192 | $ 77,856
Securities have been in a continuous unrealized loss position, unrealized losses | 1,694 | 2,619
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 5,316 | 77,059
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 26 | 2,517
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 68,876 | 797
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,668 | $ 102
Corporate Debt Securities [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 26 | 20
Securities have been in a continuous unrealized loss position, fair value | $ 152,345 | $ 131,766
Securities have been in a continuous unrealized loss position, unrealized losses | 20,794 | 14,664
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 29,023 | 45,447
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2,679 | 3,553
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 123,322 | 86,319
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 18,115 | $ 11,111
Collateralized Loan Obligations [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 20 | 19
Securities have been in a continuous unrealized loss position, fair value | $ 148,517 | $ 125,478
Securities have been in a continuous unrealized loss position, unrealized losses | 1,697 | 4,206
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 28,056 | 95,518
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 71 | 2,916
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 120,461 | 29,960
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,626 | $ 1,290
Collateralized Mortgage Backed Securities |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 1 | 1
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 6,634 | $ 6,989
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 1,226 | 886
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 6,989
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | $ 886
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 6,634 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,226 |
Securities have been in a continuous unrealized loss position, number of positions | 123 | 120
Securities have been in a continuous unrealized loss position, fair value | $ 337,529 | $ 383,769
Securities have been in a continuous unrealized loss position, unrealized losses | 83,942 | 70,040
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 2,198 | 104,109
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 103 | 9,725
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 335,331 | 279,660
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 83,839 | $ 60,315
REMIC and CMO [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 46 | 47
Securities have been in a continuous unrealized loss position, fair value | $ 131,210 | $ 148,120
Securities have been in a continuous unrealized loss position, unrealized losses | 32,827 | 27,298
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 40,911
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | 3,457
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 131,210 | 107,209
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 32,827 | $ 23,841
GNMA [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 12 | 8
Securities have been in a continuous unrealized loss position, fair value | $ 6,458 | $ 7,133
Securities have been in a continuous unrealized loss position, unrealized losses | 2,137 | 1,879
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 113 | 64
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 2 |
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 6,345 | 7,069
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 2,135 | $ 1,879
FNMA [Member] |  |
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions | 1 | 1
Held-to-maturity securities have been in a continuous unrealized loss position, fair value | $ 6,634 | $ 6,989
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss | 1,226 | 886
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 6,989
Held-to-maturity securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | $ 886
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value | 6,634 |
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 1,226 |
Securities have been in a continuous unrealized loss position, number of positions | 47 | 47
Securities have been in a continuous unrealized loss position, fair value | $ 128,781 | $ 148,229
Securities have been in a continuous unrealized loss position, unrealized losses | 29,116 | 24,425
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 2,085 | 38,296
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 101 | 3,871
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 126,696 | 109,933
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 29,015 | $ 20,554
FHLMC [Member] |  |
Securities have been in a continuous unrealized loss position, number of positions | 18 | 18
Securities have been in a continuous unrealized loss position, fair value | $ 71,080 | $ 80,287
Securities have been in a continuous unrealized loss position, unrealized losses | 19,862 | 16,438
Securities have been in a continuous unrealized loss position, less than 12 months, fair value | 0 | 24,838
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses | 0 | 2,397
Securities have been in a continuous unrealized loss position, 12 months or more, fair value | 71,080 | 55,449
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses | $ 19,862 | $ 14,041

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