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Securities - Available for Sale Securities With Gross Unrealized Losses and Their Fair Value (Details)
$ in Thousands
Sep. 30, 2025
USD ($)
position
Dec. 31, 2024
USD ($)
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 $ 7,188 $ 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (633) (933)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 7,188 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (633) $ (933)
Securities have been in a continuous unrealized loss position, number of positions 47 65
Securities have been in a continuous unrealized loss position, fair value $ 444,302 $ 772,417
Securities have been in a continuous unrealized loss position, unrealized losses (5,497) (9,335)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 176,286 665,440
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (499) (2,783)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 268,016 106,977
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (4,998) $ (6,552)
Total other securities    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 35 33
Securities have been in a continuous unrealized loss position, fair value $ 328,193 $ 300,567
Securities have been in a continuous unrealized loss position, unrealized losses (5,144) (6,970)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 107,217 201,470
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (353) (569)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 220,976 99,097
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (4,791) $ (6,401)
U.S. government agencies    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 3 2
Securities have been in a continuous unrealized loss position, fair value $ 4,096 $ 3,339
Securities have been in a continuous unrealized loss position, unrealized losses (43) (33)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 1,198  
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (11)  
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 2,898 3,339
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (32) $ (33)
Corporate    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 13 13
Securities have been in a continuous unrealized loss position, fair value $ 96,871 $ 95,758
Securities have been in a continuous unrealized loss position, unrealized losses (3,580) (6,368)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 6,234  
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (11)  
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 90,637 95,758
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (3,569) $ (6,368)
Collateralized loan obligations    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 19 18
Securities have been in a continuous unrealized loss position, fair value $ 227,226 $ 201,470
Securities have been in a continuous unrealized loss position, unrealized losses (1,521) (569)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 99,785 201,470
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (331) $ (569)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 127,441  
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (1,190)  
Mortgage-backed securities    
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 $ 7,188 $ 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (633) (933)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 7,188 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (633) $ (933)
Securities have been in a continuous unrealized loss position, number of positions 12 32
Securities have been in a continuous unrealized loss position, fair value $ 116,109 $ 471,850
Securities have been in a continuous unrealized loss position, unrealized losses (353) (2,365)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 69,069 463,970
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (146) (2,214)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 47,040 7,880
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (207) $ (151)
REMIC and CMO    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 10 19
Securities have been in a continuous unrealized loss position, fair value $ 86,741 $ 287,948
Securities have been in a continuous unrealized loss position, unrealized losses (326) (1,067)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 39,701 281,570
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses (119) (936)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value 47,040 6,378
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (207) $ (131)
GNMA    
Securities    
Securities have been in a continuous unrealized loss position, number of positions 1 4
Securities have been in a continuous unrealized loss position, fair value $ 15,027 $ 29,945
Securities have been in a continuous unrealized loss position, unrealized losses (20) (154)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 15,027 28,443
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses $ (20) (134)
Securities have been in a continuous unrealized loss position, 12 months or more, fair value   1,502
Securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses   $ (20)
FNMA    
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 $ 7,188 $ 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, unrealized loss (633) (933)
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, fair value 7,188 6,903
Held-to-maturity securities have been in a continuous unrealized loss position, 12 months or more, unrealized losses $ (633) $ (933)
Securities have been in a continuous unrealized loss position, number of positions 1 6
Securities have been in a continuous unrealized loss position, fair value $ 14,341 $ 97,417
Securities have been in a continuous unrealized loss position, unrealized losses (7) (1,048)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value 14,341 97,417
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses $ (7) $ (1,048)
FHLMC    
Securities    
Securities have been in a continuous unrealized loss position, number of positions   3
Securities have been in a continuous unrealized loss position, fair value   $ 56,540
Securities have been in a continuous unrealized loss position, unrealized losses   (96)
Securities have been in a continuous unrealized loss position, less than 12 months, fair value   56,540
Securities have been in a continuous unrealized loss position, less than 12 months, unrealized losses   $ (96)