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Insurance Operations - Assets Held by Insurance Regulators (Detail) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Restricted Cash and Cash Equivalents [Member]
Statutory Accounting Practices [Line Items]
Assets held by insurance regulators	$ 2,635us-gaap_AssetsHeldByInsuranceRegulators / us-gaap_BalanceSheetLocationAxis = uve_RestrictedCashAndCashEquivalentsMember	$ 2,635us-gaap_AssetsHeldByInsuranceRegulators / us-gaap_BalanceSheetLocationAxis = uve_RestrictedCashAndCashEquivalentsMember
Investments [Member]
Statutory Accounting Practices [Line Items]
Assets held by insurance regulators	$ 3,648us-gaap_AssetsHeldByInsuranceRegulators / us-gaap_BalanceSheetLocationAxis = us-gaap_InvestmentsMember	$ 3,609us-gaap_AssetsHeldByInsuranceRegulators / us-gaap_BalanceSheetLocationAxis = us-gaap_InvestmentsMember

X

- Definition

Carrying amount of cash and investment securities on deposit with state regulatory authorities in connection with capital requirements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 320

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=28366721&loc=d3e22002-158495

+ Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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