Goodwill And Intangible Assets (Intangible Assets Subject To Amortization) (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	$ 152,866	$ 112,993
Accumulated Amortization	59,796	51,934
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	122,484	78,580
Accumulated Amortization	43,277	37,322
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	20,794	24,456
Accumulated Amortization	8,272	6,969
Investment Banking Backlog [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	7,635	7,440
Accumulated Amortization	7,465	7,388
Non-Compete Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying value	1,953	2,517
Accumulated Amortization	$ 782	$ 255