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Securities - Schedule of Amortized Cost and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Marketable Securities [Line Items] |  |
Available for Sale, Amortized Cost | $ 320,654 | $ 440,358
Available for Sale, Gross Unrealized Gains | 2,003 | 2,890
Available for Sale, Gross Unrealized Losses | (4,010) | (4,660)
Available for Sale | 318,647 | 438,588
Held to Maturity, Amortized Cost | 11,383,492 | 12,365,308
Held to Maturity, Gross Unrealized Gains | 937 | 3,995
Held to Maturity, Gross Unrealized Losses | (1,392,063) | (1,384,705)
Held to Maturity | 9,992,366 | 10,984,598
Corporate Debt Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available for Sale, Amortized Cost | 14,350 | 20,698
Available for Sale, Gross Unrealized Gains | 1,910 | 1,827
Available for Sale, Gross Unrealized Losses | (180) | (738)
Available for Sale | 16,080 | 21,787
Held to Maturity, Amortized Cost | 12,000 | 12,000
Held to Maturity, Gross Unrealized Losses | (3,720) | (4,200)
Held to Maturity | 8,280 | 7,800
Collateralized Mortgage Obligations [Member] |  |
Marketable Securities [Line Items] |  |
Available for Sale, Amortized Cost | 196,230 | 321,881
Available for Sale, Gross Unrealized Gains | 32 | 967
Available for Sale, Gross Unrealized Losses | (2,876) | (2,804)
Available for Sale | 193,386 | 320,044
Held to Maturity, Amortized Cost | 248,114 | 263,250
Held to Maturity, Gross Unrealized Losses | (22,730) | (20,864)
Held to Maturity | 225,384 | 242,386
Mortgage-backed Securities [Member] |  |
Marketable Securities [Line Items] |  |
Available for Sale, Amortized Cost | 110,074 | 97,779
Available for Sale, Gross Unrealized Gains | 61 | 96
Available for Sale, Gross Unrealized Losses | (954) | (1,118)
Available for Sale | 109,181 | 96,757
Held to Maturity, Amortized Cost | 11,003,945 | 11,965,930
Held to Maturity, Gross Unrealized Gains | 719 | 2,131
Held to Maturity, Gross Unrealized Losses | (1,362,412) | (1,357,283)
Held to Maturity | 9,642,252 | 10,610,778
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member] |  |
Marketable Securities [Line Items] |  |
Held to Maturity, Amortized Cost | 7,750 | 7,631
Held to Maturity, Gross Unrealized Losses | (111) | (52)
Held to Maturity | 7,639 | 7,579
States and Political Subdivisions [Member] |  |
Marketable Securities [Line Items] |  |
Held to Maturity, Amortized Cost | 111,683 | 116,497
Held to Maturity, Gross Unrealized Gains | 218 | 1,864
Held to Maturity, Gross Unrealized Losses | (3,090) | (2,306)
Held to Maturity | $ 108,811 | $ 116,055

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