v3.26.3
Fair Value Measurements - Roll Forward, Level 3 (Details) - Level 3 - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year $ 133,912 $ 89,265 $ 137,123 $ 109,541
Purchases/Additions 12,589 16,341 33,914 32,328
Sales/Reductions (7,365) (21,935) (32,386) (66,735)
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income $ 8,444 $ 1,508 $ 8,952 $ 9,608
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Gain (Loss) on Sales of Loans, Net Gain (Loss) on Sales of Loans, Net Gain (Loss) on Sales of Loans, Net Gain (Loss) on Sales of Loans, Net
Included in Other Comprehensive Income (Loss) $ (1,485) $ 508 $ (1,508) $ 945
Asset balance, End of Year 146,095 85,687 146,095 85,687
Trading securities        
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year       3,330
Purchases/Additions       2,970
Sales/Reductions       (6,218)
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income       (82)
Available for sale securities        
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year 65,220 31,919 61,992 29,816
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income (2,079) 579 1,172 2,245
Included in Other Comprehensive Income (Loss) (1,485) 508 (1,508) 945
Asset balance, End of Year 61,656 33,006 61,656 33,006
Loans held for sale        
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year 26,460 45,012 38,866 48,657
Purchases/Additions 10,071 11,254 25,621 21,157
Sales/Reductions (5,411) (21,935) (30,384) (33,529)
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income (2,778) 193 (5,761) (1,761)
Asset balance, End of Year 28,342 34,524 28,342 34,524
MSR asset        
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year 22,755 7,887 17,491 5,723
Purchases/Additions 2,518 5,087 8,293 8,201
Sales/Reductions (65)   (113)  
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income 2,887 (701) 2,424 (1,651)
Asset balance, End of Year 28,095 12,273 28,095 12,273
Equity investments        
Rollforward for financial instruments measured at fair value using Level 3 inputs        
Asset balance, Beginning of Year 19,477 4,447 18,774 22,015
Sales/Reductions (1,889)   (1,889) (26,988)
Total Gains or Losses (Realized or Unrealized):        
Included in Net Income 10,414 1,437 11,117 10,857
Asset balance, End of Year $ 28,002 $ 5,884 $ 28,002 $ 5,884