Nature of Operations - Additional Information (Detail) $ in Thousands	3 Months Ended
Mar. 31, 2024 USD ($) InsurancePolicy
Nature Of Operations [Line Items]
Annualized Premiums Written \| $	$ 87,800
Citizens [Member] \| Minimum [Member]
Nature Of Operations [Line Items]
Assumed Policies \| InsurancePolicy	9,800

The total amount of premiums for insurance coverage over a period of one year.

No definition available.

Name:	hci_AnnualizedPremiumsWritten
Namespace Prefix:	hci_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration