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Related Party Transactions - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Fox Paine & Company, LLC
Related Party Transaction [Line Items]
Company's total outstanding voting power	93.00%		93.00%
Minimum voting power required to nominate Directors	25.00%		25.00%
Management fees	$ 0.5	$ 0.3	$ 1.5	$ 1.1
Fox Paine Capital Fund II Limited Partner | Global Indemnity Reinsurance
Related Party Transaction [Line Items]
Company's investment in limited partnership	3.4		3.4		3.5
Unfunded capital commitment	2.4		2.4
Distribution received from the limited partnership	0	0	0	0
Cozen O'Connor
Related Party Transaction [Line Items]
Cost incurred for legal services rendered	0.02	0	0.10	0.02
Crystal & Company
Related Party Transaction [Line Items]
Brokerage fee incurred	$ 0.1	$ 0.1	$ 0.2	$ 0.2

X

- Definition

Percentage of investee's stock owned by parent

+ References

No definition available.

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- Definition

Management Fees Related Parties

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- Definition

Minimum Voting Power To Nominate Directors

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- Definition

Unfunded Capital Commitment

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X

- Definition

The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.3)

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X

- Definition

The amount of capital contributed by the limited partners.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 272

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70434-108055



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-Name Accounting Standards Codification

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- Definition

The amount of cash paid for brokerage fees during the current period. This element is intended to represent the brokerage fees paid by and between financial industry participants.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

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- Definition

Cash inflow received as distributions, returns of capital, or sale proceeds from partnership interests held for investment purposes.

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