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Securities - Schedule of Amortized Cost and Fair Value of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Available for sale |  |
Amortized cost within one year | $ 5,505 | $ 1,535
Amortized cost one to five years | 100,301 | 340,212
Amortized cost for five to ten years | 167,764 | 238,045
Amortized cost for after ten years | 195,984 | 303,936
Amortized cost, available for sale | 469,554 | 883,728
Total available for sale investment securities, amortized cost | 634,615 | 1,137,702
Fair value within one year | 5,408 | 1,512
Fair value for one to five years | 89,650 | 312,137
Fair value for five to ten years | 141,203 | 204,282
Fair value for after ten years | 170,113 | 257,756
Fair value, available for sale | 406,374 | 775,687
Fair Value | 547,251 | 997,558
Held to maturity |  |
Within one year, amortized cost | 33,483 | 32,610
One to five years, amortized cost | 225,957 | 222,443
Five to ten years, amortized cost | 350,843 | 324,967
After ten years, amortized cost | 928,209 | 1,006,745
Amortized cost, held to maturity | 1,538,492 | 1,586,765
Investment securities, held to maturity | 1,945,795 | 2,022,748
Within one year, fair value | 33,169 | 32,382
One to five years, fair value | 216,354 | 209,854
five to ten years, fair value | 304,067 | 280,618
After ten years, fair value | 768,927 | 793,544
Fair value, held to maturity | 1,322,517 | 1,316,398
Fair value, held to maturity, mortgage obligations and backed pools | 1,668,758 | 1,681,309
Federal agency collateralized mortgage obligations |  |
Available for sale |  |
Amortized cost, available for sale, mortgage obligations and backed pools | 3,931 | 33,011
Total available for sale investment securities, amortized cost | 3,931 | 33,011
Fair Value | 3,580 | 31,215
Held to maturity |  |
Investment securities, held to maturity | 51,325 | 56,564
Fair value, held to maturity, mortgage obligations and backed pools | 43,479 | 47,699
Federal agency mortgage–backed pools |  |
Available for sale |  |
Amortized cost, available for sale, mortgage obligations and backed pools | 161,130 | 220,963
Total available for sale investment securities, amortized cost | 161,130 | 220,963
Fair Value | 137,297 | 190,656
Held to maturity |  |
Investment securities, held to maturity | 323,649 | 343,953
Fair value, held to maturity, mortgage obligations and backed pools | 275,028 | 287,239
Private labeled mortgage–backed pools |  |
Held to maturity |  |
Investment securities, held to maturity | 32,329 | 35,466
Fair value, held to maturity, mortgage obligations and backed pools | $ 27,734 | $ 29,973

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