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Document and Entity Information - USD ($)
 12 Months Ended
Dec. 31, 2023
Mar. 01, 2024
Jun. 30, 2023
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2023    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Trading Symbol HCI    
Entity Registrant Name HCI Group, Inc.    
Entity Central Index Key 0001400810    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Title of 12(b) Security Common Shares    
Security Exchange Name NYSE    
Entity File Number 001-34126    
Entity Incorporation, State or Country Code FL    
Entity Tax Identification Number 20-5961396    
Entity Address, Address Line One 3802 Coconut Palm Drive    
Entity Address, City or Town Tampa    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33619    
City Area Code 813    
Local Phone Number 849-9500    
Document Annual Report true    
Document Transition Report false    
Entity Common Stock, Shares Outstanding   9,979,720  
Entity Public Float     $ 419,575,031
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Documents Incorporated by Reference

The information required by Part III of this Form 10-K is incorporated by reference from the registrant’s definitive proxy statement which will be filed not later than 120 days after the end of the fiscal year covered by this Form 10-K.

    
Auditor Name FORVIS, LLP    
Auditor Location North Carolina    
Auditor Firm ID 686