XML 52 R43.htm IDEA: XBRL DOCUMENT v3.23.2
Investment Securities - Schedule of AFS Debt Securities in an Unrealized Loss Position (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value $ 480,072 $ 1,206,152
Less Than 12 Months, Gross Unrealized Losses (4,753) (76,494)
12 Months or Longer, Fair Value 2,067,926 1,449,762
12 Months or Longer, Gross Unrealized Losses (322,868) (252,970)
Total Fair Value 2,547,998 2,655,914
Total Gross Unrealized Losses (327,621) (329,464)
Debt Securities Issued by the U.S. Treasury and Government Agencies    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 13,669 28,574
Less Than 12 Months, Gross Unrealized Losses (54) (1,118)
12 Months or Longer, Fair Value 145,838 127,841
12 Months or Longer, Gross Unrealized Losses (14,515) (13,949)
Total Fair Value 159,507 156,415
Total Gross Unrealized Losses (14,569) (15,067)
Debt Securities Issued by States and Political Subdivisions    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 25,209 11,341
Less Than 12 Months, Gross Unrealized Losses (126) (1,240)
12 Months or Longer, Fair Value 62,113 49,985
12 Months or Longer, Gross Unrealized Losses (11,097) (11,342)
Total Fair Value 87,322 61,326
Total Gross Unrealized Losses (11,223) (12,582)
Debt Securities Issued by Government-Sponsored Enterprises    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 0 47,825
Less Than 12 Months, Gross Unrealized Losses 0 (108)
12 Months or Longer, Fair Value 1,636 803
12 Months or Longer, Gross Unrealized Losses (120) (71)
Total Fair Value 1,636 48,628
Total Gross Unrealized Losses (120) (179)
Debt Securities Issued by Corporations    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 376,871 438,225
Less Than 12 Months, Gross Unrealized Losses (2,133) (7,995)
12 Months or Longer, Fair Value 368,538 284,350
12 Months or Longer, Gross Unrealized Losses (54,252) (48,741)
Total Fair Value 745,409 722,575
Total Gross Unrealized Losses (56,385) (56,736)
Residential - Government Agencies    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 53,525 386,809
Less Than 12 Months, Gross Unrealized Losses (1,939) (30,492)
12 Months or Longer, Fair Value 617,092 340,824
12 Months or Longer, Gross Unrealized Losses (94,037) (65,723)
Total Fair Value 670,617 727,633
Total Gross Unrealized Losses (95,976) (96,215)
Residential - U.S. Government-Sponsored Enterprises    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 10,064 194,684
Less Than 12 Months, Gross Unrealized Losses (468) (22,294)
12 Months or Longer, Fair Value 734,650 598,986
12 Months or Longer, Gross Unrealized Losses (124,199) (103,816)
Total Fair Value 744,714 793,670
Total Gross Unrealized Losses (124,667) (126,110)
Commercial - Government Agencies or Sponsored Agencies    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 734 98,694
Less Than 12 Months, Gross Unrealized Losses (33) (13,247)
12 Months or Longer, Fair Value 138,059 46,973
12 Months or Longer, Gross Unrealized Losses (24,648) (9,328)
Total Fair Value 138,793 145,667
Total Gross Unrealized Losses (24,681) (22,575)
Mortgage-Backed Securities    
Schedule Of Available For Sale Securities [Line Items]    
Less Than 12 Months, Fair Value 64,323 680,187
Less Than 12 Months, Gross Unrealized Losses (2,440) (66,033)
12 Months or Longer, Fair Value 1,489,801 986,783
12 Months or Longer, Gross Unrealized Losses (242,884) (178,867)
Total Fair Value 1,554,124 1,666,970
Total Gross Unrealized Losses $ (245,324) $ (244,900)