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Securities - Available for Sale Securities With Gross Unrealized Losses and Their Fair Value (Details)
$ in Thousands
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 4 4
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 61,070 $ 65,755
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (12,031) (8,255)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 61,070 65,755
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (12,031) $ (8,255)
Securities have been in a continuous unrealized loss position, number of positions 183 166
Securities have been in a continuous unrealized loss position, fair value $ 978,310 $ 702,778
Securities have been in a continuous unrealized loss position, unrealized losses (90,062) (83,020)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 474,191 33,856
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (2,299) (1,360)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 504,119 668,922
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (87,763) $ (81,660)
Total Other Securities [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 3 3
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 54,153 $ 58,697
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (11,102) (7,458)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 54,153 58,697
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (11,102) $ (7,458)
Securities have been in a continuous unrealized loss position, number of positions 49 51
Securities have been in a continuous unrealized loss position, fair value $ 358,556 $ 350,575
Securities have been in a continuous unrealized loss position, unrealized losses (19,465) (19,358)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 180,974 27,945
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (489) (1,325)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 177,582 322,630
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (18,976) $ (18,033)
US States and Political Subdivisions Debt Securities [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 3 3
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 54,153 $ 58,697
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (11,102) (7,458)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 54,153 58,697
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (11,102) $ (7,458)
US Government Agencies Debt Securities [Member]    
Securities have been in a continuous unrealized loss position, number of positions 5 8
Securities have been in a continuous unrealized loss position, fair value $ 24,221 $ 74,517
Securities have been in a continuous unrealized loss position, unrealized losses (517) (937)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value   2,517
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses   (7)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 24,221 72,000
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (517) $ (930)
Corporate Debt Securities [Member]    
Securities have been in a continuous unrealized loss position, number of positions 26 26
Securities have been in a continuous unrealized loss position, fair value $ 149,736 $ 155,449
Securities have been in a continuous unrealized loss position, unrealized losses (18,499) (17,735)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 6,372 25,428
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (43) (1,318)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 143,364 130,021
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (18,456) $ (16,417)
Collateralized Debt Obligations [Member]    
Securities have been in a continuous unrealized loss position, number of positions 18 17
Securities have been in a continuous unrealized loss position, fair value $ 184,599 $ 120,609
Securities have been in a continuous unrealized loss position, unrealized losses (449) (686)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 174,602  
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (446)  
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 9,997 120,609
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (3) $ (686)
Collateralized Mortgage Backed Securities    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 1 1
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 6,917 $ 7,058
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (929) (797)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 6,917 7,058
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (929) $ (797)
Securities have been in a continuous unrealized loss position, number of positions 134 115
Securities have been in a continuous unrealized loss position, fair value $ 619,754 $ 352,203
Securities have been in a continuous unrealized loss position, unrealized losses (70,597) (63,662)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 293,217 5,911
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (1,810) (35)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 326,537 346,292
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (68,787) $ (63,627)
REMIC and CMO [Member]    
Securities have been in a continuous unrealized loss position, number of positions 65 46
Securities have been in a continuous unrealized loss position, fair value $ 400,702 $ 133,312
Securities have been in a continuous unrealized loss position, unrealized losses (29,443) (26,591)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 275,314  
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (1,663)  
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 125,388 133,312
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (27,780) $ (26,591)
GNMA [Member]    
Securities have been in a continuous unrealized loss position, number of positions 8 7
Securities have been in a continuous unrealized loss position, fair value $ 24,069 $ 10,466
Securities have been in a continuous unrealized loss position, unrealized losses (2,003) (1,740)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 17,903 3,867
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (147) (34)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 6,166 6,599
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (1,856) $ (1,706)
FNMA [Member]    
Held-to-maturity securities have been in a continuous unrealized loss position, number of positions 1 1
Held-to-maturity securities have been in a continuous unrealized loss position, fair value $ 6,917 $ 7,058
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (929) (797)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 6,917 7,058
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (929) $ (797)
Securities have been in a continuous unrealized loss position, number of positions 43 44
Securities have been in a continuous unrealized loss position, fair value $ 124,739 $ 133,394
Securities have been in a continuous unrealized loss position, unrealized losses (23,192) (20,935)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value   2,044
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses   (1)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 124,739 131,350
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (23,192) $ (20,934)
FHLMC [Member]    
Securities have been in a continuous unrealized loss position, number of positions 18 18
Securities have been in a continuous unrealized loss position, fair value $ 70,244 $ 75,031
Securities have been in a continuous unrealized loss position, unrealized losses (15,959) (14,396)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 70,244 75,031
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (15,959) $ (14,396)