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Related Party Transactions - Additional Information (Detail) - SPC Global RE Advisors LLC [Member] - USD ($) | 9 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Dec. 31, 2014
Related Party Transaction [Line Items] |  |
Payments due to related party | $ 0 | $ 0
Consulting agreement terminated date | Sep. 18, 2015 |

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