Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 393,962	$ 391,974
Accumulated Amortization	(286,304)	(263,313)
Net Intangible Assets	107,658	128,661
Loan servicing rights
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	127,949	125,961
Accumulated Amortization	(107,760)	(104,833)
Net Intangible Assets	20,189	21,128
Core deposits
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	215,620	215,620
Accumulated Amortization	(154,070)	(138,080)
Net Intangible Assets	61,550	77,540
Other
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	50,393	50,393
Accumulated Amortization	(24,474)	(20,400)
Net Intangible Assets	$ 25,919	$ 29,993