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Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jun. 30, 2012
Salaries [Member] |
Commitments and estimated contingent payments |
Commitments | $ 7,328
Contingent payments upon certain events: |
Termination | 4,374
Change in control | 13,634
Death | 4,924
Disability | 3,278
Non-Equity Incentive Compensation [Member] |
Commitments and estimated contingent payments |
Commitments | 3,772
Contingent payments upon certain events: |
Termination | 2,823
Change in control | 5,016
Death | 2,671
Disability | 1,760
Equity Compensation [Member] |
Commitments and estimated contingent payments |
Commitments |
Contingent payments upon certain events: |
Termination |
Change in control | 260
Death |
Disability |

X
- Definition Commitments. + References No definition available. + Details
Name: | uve_Commitments
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | uve_CommitmentsAndEstimatedContingentPaymentsAbstract
Namespace Prefix: | uve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | uve_ContingentPaymentsUpOnCertainEventsAbstract
Namespace Prefix: | uve_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Contingent payments upon change in control. + References No definition available. + Details
Name: | uve_ContingentPaymentsUponChangeInControl
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contingent payments upon death. + References No definition available. + Details
Name: | uve_ContingentPaymentsUponDeath
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contingent payments upon disability. + References No definition available. + Details
Name: | uve_ContingentPaymentsUponDisability
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Contingent payments upon termination. + References No definition available. + Details
Name: | uve_ContingentPaymentsUponTermination
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration