Goodwill and Other Acquisition-Related Intangible Assets (Goodwill Assets by Business Segment) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2022 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 655,149
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	(1,625)
Ending balance	653,524
Community banking
Goodwill [Roll Forward]
Beginning balance	545,671
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	545,671
Specialty finance
Goodwill [Roll Forward]
Beginning balance	40,105
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	(1,625)
Ending balance	38,480
Wealth management
Goodwill [Roll Forward]
Beginning balance	69,373
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	$ 69,373