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Reinsurance - Summary of Quota-Share Cession Rates by Reinsurance Program (Detail) | 12 Months Ended
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Dec. 31, 2014
June 2011 - May 2012 |
Quota Share Cession Rate By Reinsurance Program [Line Items] |
Percentage of cession rate | 50.00%uve_QuotaShareCessionRateByReinsuranceProgramAndYear / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneTwoThousandElevenToMayTwoThousandTwelveMember
June 2012 - May 2013 |
Quota Share Cession Rate By Reinsurance Program [Line Items] |
Percentage of cession rate | 45.00%uve_QuotaShareCessionRateByReinsuranceProgramAndYear / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneTwoThousandTwelveToMayTwoThousandThirteenMember
June 2013 - May 2014 |
Quota Share Cession Rate By Reinsurance Program [Line Items] |
Percentage of cession rate | 45.00%uve_QuotaShareCessionRateByReinsuranceProgramAndYear / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneTwoThousandThirteenToMayTwoThousandFourteenMember
June 2014 - May 2015 |
Quota Share Cession Rate By Reinsurance Program [Line Items] |
Percentage of cession rate | 30.00%uve_QuotaShareCessionRateByReinsuranceProgramAndYear / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneTwoThousandFourteenToMayTwoThousandFifteenMember

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- Definition Quota-share cession rate by reinsurance program and year in effect. + References No definition available. + Details
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