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Insurance Operations - Statutory Capital and Surplus, and an Amount Representing Ten Percent of Total Liabilities for both UPCIC and APPCIC (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Statutory Accounting Practices [Line Items]
Statutory capital and surplus	$ 200,200us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance
UPCIC [Member]
Statutory Accounting Practices [Line Items]
Ten percent of total liabilities	42,659uve_StatutoryAccountingPracticesTenPercentOfStatutoryLiabilitiesBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_UniversalPropertyAndCasualtyInsuranceCompanyMember	39,179uve_StatutoryAccountingPracticesTenPercentOfStatutoryLiabilitiesBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_UniversalPropertyAndCasualtyInsuranceCompanyMember
Statutory capital and surplus	200,173us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_UniversalPropertyAndCasualtyInsuranceCompanyMember	161,803us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_UniversalPropertyAndCasualtyInsuranceCompanyMember
APPCIC [Member]
Statutory Accounting Practices [Line Items]
Ten percent of total liabilities	514uve_StatutoryAccountingPracticesTenPercentOfStatutoryLiabilitiesBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_AmericanPlatinumPropertyAndCasualtyInsuranceCompanyMember	625uve_StatutoryAccountingPracticesTenPercentOfStatutoryLiabilitiesBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_AmericanPlatinumPropertyAndCasualtyInsuranceCompanyMember
Statutory capital and surplus	$ 14,036us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_AmericanPlatinumPropertyAndCasualtyInsuranceCompanyMember	$ 13,708us-gaap_StatutoryAccountingPracticesStatutoryCapitalAndSurplusBalance / us-gaap_StatutoryAccountingPracticesByJurisdictionAxis = uve_AmericanPlatinumPropertyAndCasualtyInsuranceCompanyMember

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- Definition

The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.23(c))

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 505

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6486098&loc=d3e24708-158529



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 24

-Subparagraph c

-Article 7

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- Definition

The ten percent of statutory liabilities as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country.

+ References

No definition available.

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