XML 69 R48.htm IDEA: XBRL DOCUMENT v3.10.0.1

Investments - Schedule of Credit Quality of Investment Securities With Contractual Maturities or The Issuer of Such Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 820,438	$ 649,334
Percentage of Total Fair Value	100.00%	100.00%
AAA
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 388,672	$ 317,313
Percentage of Total Fair Value	47.40%	48.90%
AA
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 100,791	$ 129,573
Percentage of Total Fair Value	12.30%	20.00%
A
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 214,503	$ 146,749
Percentage of Total Fair Value	26.10%	22.60%
BBB
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 112,613	$ 51,020
Percentage of Total Fair Value	13.70%	7.80%
BB and Below
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 494	$ 1,569
Percentage of Total Fair Value	0.10%	0.20%
No Rating Available
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 3,365	$ 3,110
Percentage of Total Fair Value	0.40%	0.50%

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: