Related Party Transactions - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
Jun. 30, 2013 Directors
Moksha [Member]
Related Party Transaction [Line Items]
Assumed total covered exposure	$ 15,400
Premiums paid	4,300
No. of non-employee directors	1
Oxbridge [Member]
Related Party Transaction [Line Items]
Assumed total covered exposure	10,100
Premiums paid	$ 4,900
No. of non-employee directors	3

Number of non employee directors as capital partner participants in reinsurance treaty with related party.

No definition available.

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