XML 46 R34.htm IDEA: XBRL DOCUMENT
v3.19.2

Investments - Schedule of Credit Quality of Investment Securities With Contractual Maturities or The Issuer of Such Securities (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 884,093 | $ 820,438
Percentage of Total Fair Value | 100.00% | 100.00%
AAA [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 419,914 | $ 388,672
Percentage of Total Fair Value | 47.50% | 47.40%
AA [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 102,686 | $ 100,791
Percentage of Total Fair Value | 11.60% | 12.30%
A [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 232,297 | $ 214,503
Percentage of Total Fair Value | 26.30% | 26.10%
BBB [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 124,880 | $ 112,613
Percentage of Total Fair Value | 14.10% | 13.70%
BB and Below [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 0 | $ 494
Percentage of Total Fair Value | 0.00% | 0.10%
Not Rated Available [Member] |  |
Debt Securities, Available-for-sale [Line Items] |  |
Fair Value | $ 4,316 | $ 3,365
Percentage of Total Fair Value | 0.50% | 0.40%

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of available for sale securities with contractual maturities. + References No definition available. + Details
Name: | uve_AvailableForSaleSecuritiesContractualMaturities
Namespace Prefix: | uve_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of certain securities (as a percentage) out of total fixed maturities securities. + References No definition available. + Details
Name: | uve_FixedMaturitiesFairValuePercentage
Namespace Prefix: | uve_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AAAComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AAComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_AComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_BBBComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_BBAndBelowComparableRatingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ExternalCreditRatingByGroupingAxis=uve_NotRatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |