v3.25.1
Securities, AFS Securities in Continuous Unrealized Loss Position (Details)
$ in Thousands
Mar. 31, 2025
USD ($)
Position
Dec. 31, 2024
USD ($)
Position
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 165,698 $ 195,884
12 months or longer 1,286,316 1,291,001
Total 1,452,014 1,486,885
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months (948) (2,515)
12 months or longer (138,539) (162,371)
Total $ (139,487) $ (164,886)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 23 32
12 months or longer | Position 364 369
Total | Position 387 401
AIR on AFS debt securities $ 4,500 $ 4,400
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Other Assets Other Assets
U.S. Treasury [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 0 $ 0
12 months or longer 94,177 92,737
Total 94,177 92,737
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months 0 0
12 months or longer (4,790) (6,107)
Total $ (4,790) $ (6,107)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 0 0
12 months or longer | Position 5 5
Total | Position 5 5
Federal Agency [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 0 $ 0
12 months or longer 223,429 218,517
Total 223,429 218,517
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months 0 0
12 months or longer (24,910) (29,831)
Total $ (24,910) $ (29,831)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 0 0
12 months or longer | Position 16 16
Total | Position 16 16
State & Municipal [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 759 $ 759
12 months or longer 87,943 86,731
Total 88,702 87,490
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months (3) (4)
12 months or longer (6,552) (7,963)
Total $ (6,555) $ (7,967)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 1 1
12 months or longer | Position 66 66
Total | Position 67 67
Mortgage-Backed [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 60,880 $ 95,153
12 months or longer 358,323 368,589
Total 419,203 463,742
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months (455) (1,374)
12 months or longer (38,869) (46,625)
Total $ (39,324) $ (47,999)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 10 16
12 months or longer | Position 148 152
Total | Position 158 168
Collateralized Mortgage Obligations [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 104,059 $ 98,494
12 months or longer 476,660 480,891
Total 580,719 579,385
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months (490) (1,128)
12 months or longer (60,710) (68,386)
Total $ (61,200) $ (69,514)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 12 14
12 months or longer | Position 114 116
Total | Position 126 130
Corporate [Member]    
Unrealized Loss Position, Fair Value [Abstract]    
Less than 12 months $ 0 $ 1,478
12 months or longer 45,784 43,536
Total 45,784 45,014
Unrealized Loss Position, Unrealized Losses [Abstract]    
Less than 12 months 0 (9)
12 months or longer (2,708) (3,459)
Total $ (2,708) $ (3,468)
Unrealized Loss Position, Number of Positions [Abstract]    
Less than 12 months | Position 0 1
12 months or longer | Position 15 14
Total | Position 15 15