Goodwill and Other Intangible Assets (Goodwill Assets by Business Segment) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 645,707
Goodwill Acquired	9,275
Impairment Loss	0
Goodwill Adjustments	167
Ending balance	655,149
Community banking
Goodwill [Roll Forward]
Beginning balance	536,396
Goodwill Acquired	9,275
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	545,671
Specialty finance
Goodwill [Roll Forward]
Beginning balance	39,938
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	167
Ending balance	40,105
Wealth management
Goodwill [Roll Forward]
Beginning balance	69,373
Goodwill Acquired	0
Impairment Loss	0
Goodwill Adjustments	0
Ending balance	$ 69,373