Other Assets - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
Sep. 30, 2014
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Amount received from retrospective reinsurance contracts	$ 1,485

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