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Organization, Consolidation and Presentation (Details)	3 Months Ended
	Mar. 31, 2022 subsidiary states
Number of Wholly-Owned Subsidiaries
Number of Wholly Owned Subsidiaries | subsidiary	4
Number of Majority Owned Subsidiaries | subsidiary	1
Number of States in which Entity Operates | states	8
Additional Licensed States | states	9

X

- Definition

Number of Additional States in which Entity is Licensed

+ References

No definition available.

+ Details

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Namespace Prefix:	uihc_
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X

- Definition

Number of Majority Owned Subsidiaries

+ References

No definition available.

+ Details

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Namespace Prefix:	uihc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of Wholly-Owned Subsidiaries

+ References

No definition available.

+ Details

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Namespace Prefix:	uihc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- Definition

[Line Items] for Number of Wholly-Owned Subsidiaries [Table]

+ References

No definition available.

+ Details

Name:	uihc_NumberofWhollyOwnedSubsidiariesLineItems
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The number of states the entity operates in as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant