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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