XML 41 R40.htm IDEA: XBRL DOCUMENT v2.4.1.9

Reinsurance - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity, Total [Member] | Amounts Due From Reinsurers [Member]
Effects of Reinsurance [Line Items]
Unsecured amounts due from reinsurers exceeding a fixed percentage of stockholders equity	3.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_StockholdersEquityTotalMember / us-gaap_ConcentrationRiskByTypeAxis = uve_AmountsDueFromReinsurersMember
Reinsurance Program Effective June One Two Thousand Fourteen [Member]
Effects of Reinsurance [Line Items]
Percentage of premium ceded	30.00%uve_PercentageOfPremiumCeded / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneOneTwoThousandFourteenMember
Percentage reduction of premium ceded	15.00%uve_PercentageReductionOfPremiumCeded / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneOneTwoThousandFourteenMember
Reinsurance Program Effective June One Two Thousand Thirteen [Member]
Effects of Reinsurance [Line Items]
Percentage of premium ceded	45.00%uve_PercentageOfPremiumCeded / us-gaap_ReinsurancePolicyTypeAxis = uve_ReinsuranceProgramEffectiveJuneOneTwoThousandThirteenMember

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 21

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 20

-URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 275

-SubTopic 10

-Section 50

-Paragraph 18

-URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_EffectsOfReinsuranceLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the percentage of premiums ceded to reinsurers, in order to reduce the company's risk of loss.

+ References

No definition available.

+ Details

Name:	uve_PercentageOfPremiumCeded
Namespace Prefix:	uve_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the reduction (as a percentage) in premiums ceded to reinsurers from the prior year.

+ References

No definition available.

+ Details

Name:	uve_PercentageReductionOfPremiumCeded
Namespace Prefix:	uve_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_StockholdersEquityTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsurancePolicyTypeAxis=uve_ReinsuranceProgramEffectiveJuneOneTwoThousandFourteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ReinsurancePolicyTypeAxis=uve_ReinsuranceProgramEffectiveJuneOneTwoThousandThirteenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: