Other Assets - Additional Information (Detail) $ in Thousands	1 Months Ended
Sep. 30, 2016 USD ($)	Jun. 30, 2016 USD ($) Contract
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Cash payments received from retrospective reinsurance contracts \| $	$ 5,716	$ 37,800
Number of retrospective reinsurance contracts \| Contract		2

Cash receipt in connection with multi-year retrospectively rated reinsurance contracts.

No definition available.

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