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Securities - Schedule of Government-Sponsored Residential Mortgage-Backed Securities with Gross Unrealized Losses (Details
$ in Thousands
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 756 736
Gross Unrealized Losses    
Less than 12 Months $ 855 $ 269
12 Months or Longer 756,191 754,286
Total 757,046 754,555
Fair Value    
Less than 12 Months 218,888 27,821
12 Months or Longer 3,802,710 4,346,529
Total $ 4,021,598 $ 4,374,350
Government-sponsored residential mortgage-backed securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 324 324
Gross Unrealized Losses    
Less than 12 Months $ 9 $ 0
12 Months or Longer 537,424 521,527
Total 537,433 521,527
Fair Value    
Less than 12 Months 113,326 0
12 Months or Longer 2,448,569 2,780,638
Total $ 2,561,895 $ 2,780,638
Government-sponsored commercial mortgage-backed securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 187 187
Gross Unrealized Losses    
Less than 12 Months $ 27 $ 0
12 Months or Longer 201,381 201,653
Total 201,408 201,653
Fair Value    
Less than 12 Months 86,201 0
12 Months or Longer 1,074,910 1,124,376
Total $ 1,161,111 $ 1,124,376
U.S. Agency bonds    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 1 23
Gross Unrealized Losses    
Less than 12 Months $ 0 $ 0
12 Months or Longer 1,936 20,443
Total 1,936 20,443
Fair Value    
Less than 12 Months 0 0
12 Months or Longer 17,672 216,011
Total $ 17,672 $ 216,011
U.S. Treasury securities    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 6 6
Gross Unrealized Losses    
Less than 12 Months $ 0 $ 36
12 Months or Longer 2,165 4,364
Total 2,165 4,400
Fair Value    
Less than 12 Months 0 4,927
12 Months or Longer 97,619 90,225
Total $ 97,619 $ 95,152
State and municipal bonds and obligations    
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Line Items]    
Number of holdings 238 196
Gross Unrealized Losses    
Less than 12 Months $ 819 $ 233
12 Months or Longer 13,285 6,299
Total 14,104 6,532
Fair Value    
Less than 12 Months 19,361 22,894
12 Months or Longer 163,940 135,279
Total $ 183,301 $ 158,173