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Related party transactions	3 Months Ended
	Mar. 31, 2013
Related Party Transactions [Abstract]
Related party transactions	11. Related party transactions The Company does not make loans to its officers and directors except under normal commercial terms pursuant to client margin account agreements. These loans are fully collateralized by employee-owned securities.

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The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.



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