Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill [Roll Forward]
Goodwill, beginning balance	$ 686,339
Goodwill from business combinations	3,250
Goodwill, ending balance	689,589
Wealth Management
Goodwill [Roll Forward]
Goodwill, beginning balance	20,517
Goodwill from business combinations	701
Goodwill, ending balance	21,218
Consumer Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	199,119
Goodwill from business combinations	697
Goodwill, ending balance	199,816
Commercial Lending
Goodwill [Roll Forward]
Goodwill, beginning balance	314,260
Goodwill from business combinations	1,416
Goodwill, ending balance	315,676
Investment Management
Goodwill [Roll Forward]
Goodwill, beginning balance	152,443
Goodwill from business combinations	436
Goodwill, ending balance	$ 152,879