Goodwill and Intangible Assets Goodwill Details (Details) (USD $)	3 Months Ended	9 Months Ended	3 Months Ended
Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2013 Dahlman Rose & Company, LLC
Goodwill [Line Items]
Goodwill, Impairment Loss	$ 0	$ 0	$ 0	$ 0
Goodwill, Other Changes					$ 8,700,000

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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