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Securities - Schedule of Held-to-maturity, Unrealized Loss on Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Held-to-maturity:    
12 Months or Greater, Fair Value $ 113,267 $ 262,536
12 Months or Greater, Gross Unrealized Losses $ (14,512) $ (18,698)
12 Months or Greater, Number of Securities 53 57
Total, Fair Value $ 113,267 $ 262,536
Total, Gross Unrealized Losses $ (14,512) $ (18,698)
Total, Number of Securities 53 57
US Treasury Securities [Member]    
Held-to-maturity:    
12 Months or Greater, Fair Value   $ 148,584
12 Months or Greater, Gross Unrealized Losses   $ (1,482)
12 Months or Greater, Number of Securities   4
Total, Fair Value   $ 148,584
Total, Gross Unrealized Losses   $ (1,482)
Total, Number of Securities   4
US Government-sponsored Enterprises Debt Securities [Member]    
Held-to-maturity:    
12 Months or Greater, Fair Value $ 42,780 $ 42,194
12 Months or Greater, Gross Unrealized Losses $ (5,643) $ (7,143)
12 Months or Greater, Number of Securities 13 13
Total, Fair Value $ 42,780 $ 42,194
Total, Gross Unrealized Losses $ (5,643) $ (7,143)
Total, Number of Securities 13 13
Municipal securities [Member]    
Held-to-maturity:    
12 Months or Greater, Fair Value $ 46,134 $ 46,500
12 Months or Greater, Gross Unrealized Losses $ (5,779) $ (6,178)
12 Months or Greater, Number of Securities 35 35
Total, Fair Value $ 46,134 $ 46,500
Total, Gross Unrealized Losses $ (5,779) $ (6,178)
Total, Number of Securities 35 35
Mortgage-backed securities (GSEs) [Member]    
Held-to-maturity:    
12 Months or Greater, Fair Value $ 24,353 $ 25,258
12 Months or Greater, Gross Unrealized Losses $ (3,090) $ (3,895)
12 Months or Greater, Number of Securities 5 5
Total, Fair Value $ 24,353 $ 25,258
Total, Gross Unrealized Losses $ (3,090) $ (3,895)
Total, Number of Securities 5 5