Capital Maintained In Excess Of Required Capital

No definition available.

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- Definition

Percentage of net capital to the Company's minimum dollar requirement required for a broker-dealer to repay subordinated borrowings, pay cash dividends, or make any unsecured advances or loans to its parent company or employees.

+ References

No definition available.

+ Details

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- Definition

Percentage of Aggregate Debit Balances Required as Minimum Net Capital

+ References

No definition available.

+ Details

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- Definition

Percentage Of Capital Surplus

+ References

No definition available.

+ Details

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- Details

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- Definition

The minimum Total risk based capital ratio (total capital divided by risk weighted assets) required for capital adequacy purposes under the regulatory framework for prompt corrective action.

+ References

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 22

-IssueDate 2006-05-01

-Chapter 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 942

-SubTopic 505

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958570-112826

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1H

-Subparagraph (c)(2)

-URI http://asc.fasb.org/extlink&oid=7881181&loc=d3e65071-112826

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 15

-Subparagraph 3a

-IssueDate 2006-05-01

-Chapter 17

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7881181&loc=SL5958568-112826

+ Details

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- Definition

The amount by which the company's Total Capital exceeds the minimum required for capital adequacy purposes.

+ References

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-DEP

-Paragraph 15

-Subparagraph 3a

-IssueDate 2006-05-01

-Chapter 17

-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.

+ Details

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- Definition

Amount of minimum net capital required to be maintained to engage in securities transactions.

+ References

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

-Publisher SEC

-Name Rule 15c3

-Number 240

-Section 1

-Paragraph 1

-Subparagraph i

-Article 15c3

-Subsection a

+ Details

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- Definition

Amounts payable to customers at the balance sheet date. The term customers generally excludes other broker-dealers; persons who are principal officers, directors, and stockholders; and persons whose securities or funds are part of the regulatory net capital of the broker-dealer. Another broker-dealer's account can be classified as a customer if the account is carried as an omnibus account in compliance with certain regulations. The accounts of principal officers, directors and stockholders may be combined in the customer captions if they are not material and the combination is disclosed in the oath that is required to accompany the annual audited FOCUS Report.

+ References

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

-Publisher SEC

-Name Rule 15c3

-Number 240

-Section 1

-Paragraph 1

-Article 15c3

-Subsection c

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

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Paragraph 35

-IssueDate 2006-05-01

-Chapter 4

-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 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Audit and Accounting Guide (AAG)

-Number AAG-BRD

-Paragraph 80

-Subparagraph Exhibit 4-8, 5

-IssueDate 2006-05-01

-Chapter 4

-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.

+ Details

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- Definition

Indebtedness divided by net capital.

+ References

No definition available.

+ Details

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Regulatory Requirements - Additional Information (Detail)	Sep. 30, 2012 USD ($)	Dec. 31, 2011 USD ($)	Sep. 30, 2012 GAIN Capital Group, LLC USD ($)	Sep. 30, 2012 GAIN Capital Group, LLC Minimum USD ($)	Sep. 30, 2012 GAIN Capital Securities, Inc. USD ($)	Sep. 30, 2012 GAIN Capital Securities, Inc. Maximum	Sep. 30, 2012 GAIN Capital-Forex.com U.K., Ltd. USD ($)	Sep. 30, 2012 GAIN Capital-Forex.com U.K., Ltd. Maximum USD ($)	Sep. 30, 2012 GAIN Capital-Forex.com U.K., Ltd. Maximum EUR (€)	Sep. 30, 2012 Forex.com Japan Co., Ltd. USD ($)	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. USD ($)	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. AUD	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. Minimum USD ($)	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. Minimum AUD	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. Maximum USD ($)	Sep. 30, 2012 GAIN Capital Forex.com Australia, Pty. Ltd. Maximum AUD	Sep. 30, 2012 GAIN Capital-Forex.com Hong Kong, Ltd. USD ($)	Sep. 30, 2012 GAIN Capital-Forex.com Hong Kong, Ltd. Maximum USD ($)	Sep. 30, 2012 GAIN Global Markets, Inc. USD ($)	Sep. 30, 2012 Open E Cry Limited Liability Company USD ($)	Sep. 30, 2012 Open E Cry Limited Liability Company Maximum USD ($)	Sep. 30, 2012 GAIN Capital-Forex.com Canada Ltd. USD ($)	Jun. 30, 2012 GAIN Capital-Forex.com Canada Ltd. USD ($)	Jun. 30, 2012 GAIN Capital-Forex.com Canada Ltd. CAD
Schedule Of Compliance With Regulatory Capital Requirements For Broker Dealer [Line Items]
Net capital requirement			$ 20,000,000		$ 50,000			$ 1,000,000	€ 730,000		$ 50,000	50,000						$ 1,925,000	$ 100,000		$ 1,000,000		$ 250,000	250,000
Percentage of total payables to customers required to be maintained			5.00%								5.00%	5.00%					5.00%				8.00%
Payables to customers	414,011,000	293,142,000		10,000,000									1,020,000	1,000,000	101,600,000	100,000,000
Capital in excess of regulatory capital, value	$ 57,810,000		$ 18,560,000		$ 70,000		$ 21,670,000			$ 8,260,000	$ 2,120,000						$ 1,630,000		$ 280,000	$ 3,600,000		$ 1,600,000
Capital in excess of regulatory capital, percentage			1,800,000		2,400,000		3.0			3.1	7.4	7.4					1.8		3.8	3.2		7.4
Aggregate indebtedness to net capital ratio						15
Regulatory capital held, percentage in excess of its requirements							110.00%
Minimum capital adequacy ratio										120.00%
Aggregate gross foreign currency position																	1.50%