Goodwill And Other Intangible Assets (Narrative) (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Indefinite-lived Intangible Assets [Line Items]
Goodwill increase due to foreign currency translation adjustments			$ 2,907
Amortization of other intangible assets	$ 1,248	$ 934	2,546	$ 1,947
Community banking
Indefinite-lived Intangible Assets [Line Items]
Goodwill increase			12,800
Goodwill increase due to foreign currency translation adjustments			$ 1,354
Community banking | Core deposit intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets			10 years
Specialty finance
Indefinite-lived Intangible Assets [Line Items]
Goodwill increase due to foreign currency translation adjustments			$ 1,553
Specialty finance | Customer list intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets			18 years
Wealth management
Indefinite-lived Intangible Assets [Line Items]
Goodwill increase due to foreign currency translation adjustments			$ 0
Wealth management | Customer list intangibles
Indefinite-lived Intangible Assets [Line Items]
Amortization period in years, other intangible assets			10 years