XML 50 R38.htm IDEA: XBRL DOCUMENT v3.24.2.u1
Securities- Unrealized Losses (Details) - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months $ 2,266,283 $ 1,021,511
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 15,899 14,349
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 1,585,296 2,243,962
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 197,897 243,875
Total investments with an unrealized loss, fair value 3,851,579 3,265,473
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 213,796 258,224
U.S. Treasury securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 1,163,421 693,621
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 5,851 11,651
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 181,953 192,500
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 1,026 2,929
Total investments with an unrealized loss, fair value 1,345,374 886,121
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 6,877 14,580
U.S. Government agency securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 1,275 14,989
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 10 11
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 236,960 247,648
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 23,870 21,866
Total investments with an unrealized loss, fair value 238,235 262,637
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 23,880 21,877
Mortgage-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 661,753 72,907
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 7,350 1,518
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 605,683 828,251
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 104,467 123,499
Total investments with an unrealized loss, fair value 1,267,436 901,158
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 111,817 125,017
State and municipal securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 237,393 185,108
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 60 908
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 277,936 449,212
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 38,048 44,200
Total investments with an unrealized loss, fair value 515,329 634,320
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 38,108 45,108
Asset-backed securities    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 69,306 42,207
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 342 254
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 21,427 122,469
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 356 10,026
Total investments with an unrealized loss, fair value 90,733 164,676
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total 698 10,280
Corporate notes    
Debt Securities, Available-for-sale [Line Items]    
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months 133,135 12,679
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss 2,286 7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer 261,337 403,882
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss 30,130 41,355
Total investments with an unrealized loss, fair value 394,472 416,561
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss, Total $ 32,416 $ 41,362