Goodwill and Other Acquisition-Related Intangible Assets - Schedule of Goodwill Assets by Reporting Unit (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2025 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 796,942
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	697
Ending balance	797,639
Community banking
Goodwill [Roll Forward]
Beginning balance	687,754
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	687,754
Specialty finance
Goodwill [Roll Forward]
Beginning balance	37,193
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	697
Ending balance	37,890
Wealth management
Goodwill [Roll Forward]
Beginning balance	71,995
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	$ 71,995