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Securities - Schedule of Amortized Cost and Fair Value of Investment Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Marketable Securities [Line Items]    
Available for Sale, Amortized Cost $ 339,016 $ 440,358
Available for Sale, Gross Unrealized Gains 2,157 2,890
Available for Sale, Gross Unrealized Losses (4,213) (4,660)
Available for Sale 336,960 438,588
Held to Maturity, Amortized Cost 10,757,464 12,365,308
Held to Maturity, Gross Unrealized Gains 600 3,995
Held to Maturity, Gross Unrealized Losses (1,375,585) (1,384,705)
Held to Maturity 9,382,479 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 2,035 1,827
Available for Sale, Gross Unrealized Losses (60) (738)
Available for Sale 16,325 21,787
Held to Maturity, Amortized Cost 12,000 12,000
Held to Maturity, Gross Unrealized Losses (3,840) (4,200)
Held to Maturity 8,160 7,800
Collateralized Mortgage Obligations [Member]    
Marketable Securities [Line Items]    
Available for Sale, Amortized Cost 216,142 321,881
Available for Sale, Gross Unrealized Gains 81 967
Available for Sale, Gross Unrealized Losses (3,233) (2,804)
Available for Sale 212,990 320,044
Held to Maturity, Amortized Cost 232,345 263,250
Held to Maturity, Gross Unrealized Losses (24,128) (20,864)
Held to Maturity 208,217 242,386
Mortgage-backed Securities [Member]    
Marketable Securities [Line Items]    
Available for Sale, Amortized Cost 108,524 97,779
Available for Sale, Gross Unrealized Gains 41 96
Available for Sale, Gross Unrealized Losses (920) (1,118)
Available for Sale 107,645 96,757
Held to Maturity, Amortized Cost 10,409,133 11,965,930
Held to Maturity, Gross Unrealized Gains 380 2,131
Held to Maturity, Gross Unrealized Losses (1,345,063) (1,357,283)
Held to Maturity 9,064,450 10,610,778
U.S. Treasury Securities and Obligations of U.S. Government Agencies [Member]    
Marketable Securities [Line Items]    
Held to Maturity, Amortized Cost 5,861 7,631
Held to Maturity, Gross Unrealized Losses (44) (52)
Held to Maturity 5,817 7,579
States and Political Subdivisions [Member]    
Marketable Securities [Line Items]    
Held to Maturity, Amortized Cost 98,125 116,497
Held to Maturity, Gross Unrealized Gains 220 1,864
Held to Maturity, Gross Unrealized Losses (2,510) (2,306)
Held to Maturity $ 95,835 $ 116,055