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Quarterly Results for 2022 and 2011 (Unaudited) - Additional Information (Detail) | Dec. 31, 2022 | Dec. 31, 2021
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Quarterly Financial Information Disclosure [Abstract] |  |
Insurance policy renewal commissions (percent) | 8.00% | 10.00%

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- References No definition available. + Details
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- Definition Insurance Policy Renewal Commissions, Percent + References No definition available. + Details
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Namespace Prefix: | uve_
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