Commitments and Contingencies - Additional Information (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2024 USD ($) Reinsurance	Dec. 31, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Number of multi-year reinsurance contracts \| Reinsurance	1
Contractual Obligation	$ 91,350
Unfunded balance	3,806	$ 4,205
Amount of FIGA assessments payable	$ 1,651

Represents the amount of assessments payable to the Florida Insurance Guaranty Association ("FIGA") at a reporting date.

No definition available.

+ Details

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Namespace Prefix:	hci_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of multi year reinsurance contracts.

+ References

No definition available.

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Amount of contractual obligation, including, but not limited to, long-term debt, lease obligation, purchase obligation, and other commitments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480678/235-10-S99-3

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-6A

+ Details

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