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Regulatory Requirements and Subsidiary Dividend Restrictions - Minimum net capital (Details) | Sep. 30, 2017 USD ($)
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Capital and Other Regulatory Requirements [Abstract] |
Minimum Net Capital Required for Broker-Dealer Subsidiary | $ 1,000,000
Minimum Net Capital Required for Entity | $ 0.08

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- Definition Capital and Other Regulatory Requirements [Abstract] + References No definition available. + Details
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- Definition Minimum amount of net capital required to be maintained by entity's broker-dealer subsidiary to engage in securities transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
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- Definition Minimum amount of net capital required to be maintained by the entity to engage in securities transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Rule 15c3-1 -Number 240 -Section 15c3-1 + Details
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