Goodwill and Intangible Assets (Intangible Assets Subject to Amortization) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Gross carrying value	$ 49,279	$ 49,720
Accumulated Amortization	18,713	15,125
Customer Relationships [Member]
Gross carrying value	37,068	37,068
Accumulated Amortization	13,854	11,015
Trade Name [Member]
Gross carrying value	7,981	7,981
Accumulated Amortization	758	364
Non-Compete Agreement [Member]
Gross carrying value	2,441	2,441
Accumulated Amortization	2,399	2,238
Investment Banking Backlog [Member]
Gross carrying value	1,789	2,230
Accumulated Amortization	$ 1,702	$ 1,508

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 142

-Paragraph 45

-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16323-109275

Name:	us-gaap_FiniteLivedIntangibleAssetsGross
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant