v3.26.1
Securities - Schedule of Government-Sponsored Residential Mortgage-Backed Securities With Gross Unrealized Losses (Details)
$ in Thousands
Mar. 31, 2026
USD ($)
holding
Dec. 31, 2025
USD ($)
holding
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings | holding 664 639
Gross Unrealized Losses    
Less than 12 Months $ 4,462 $ 325
12 Months or Longer 355,529 346,878
Total 359,991 347,203
Fair Value    
Less than 12 Months 320,963 78,231
12 Months or Longer 2,163,378 2,277,277
Total $ 2,484,341 $ 2,355,508
Government-sponsored residential mortgage-backed securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings | holding 294 292
Gross Unrealized Losses    
Less than 12 Months $ 2,923 $ 317
12 Months or Longer 245,315 239,531
Total 248,238 239,848
Fair Value    
Less than 12 Months 260,841 74,415
12 Months or Longer 1,457,958 1,511,918
Total $ 1,718,799 $ 1,586,333
Government-sponsored commercial mortgage-backed securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings | holding 146 148
Gross Unrealized Losses    
Less than 12 Months $ 0 $ 0
12 Months or Longer 98,881 97,451
Total 98,881 97,451
Fair Value    
Less than 12 Months 0 0
12 Months or Longer 590,634 608,386
Total $ 590,634 $ 608,386
State and municipal bonds and obligations    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings | holding 224 199
Gross Unrealized Losses    
Less than 12 Months $ 1,539 $ 8
12 Months or Longer 11,333 9,896
Total 12,872 9,904
Fair Value    
Less than 12 Months 60,122 3,816
12 Months or Longer 114,786 156,973
Total $ 174,908 $ 160,789