Goodwill And Intangible Assets (Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 109,271	$ 99,403
Accumulated Amortization	52,910	47,123
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	71,649	63,661
Accumulated Amortization	33,624	29,636
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	23,303	21,423
Accumulated Amortization	6,426	5,322
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	7,388	7,388
Accumulated Amortization	7,388	7,388
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	5,447	5,447
Accumulated Amortization	5,237	4,657
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	1,484	1,484
Accumulated Amortization	$ 235	$ 120