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Regulatory Regulations (Details) (USD $) In Millions, unless otherwise specified	Oct. 31, 2012
Regulatory Requirements Disclosure Details [Abstract]
Net capital	$ 42.9
Minimum net capital requirement	$ 3.9
Ratio of aggregate indebtedness to net capital	1.35

Net capital is equal to the net worth of the broker dealer, less certain items such as exchange memberships, carrying value of securities not readily marketable, haircuts on marketable securities in proprietary accounts, furniture and equipment and other illiquid assets as defined.

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