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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 |

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