v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 02, 2026
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Transition Report false  
Entity File Number 001-36462  
Entity Registrant Name Heritage Insurance Holdings, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 45-5338504  
Entity Address, Address Line One 1401 N. Westshore Blvd  
Entity Address, City or Town Tampa  
Entity Address, State or Province FL  
Entity Address, Postal Zip Code 33607  
City Area Code 727  
Local Phone Number 362-7200  
Title of 12(b) Security Common Stock, par value $0.0001 per share  
Trading Symbol HRTG  
Security Exchange Name NYSE  
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  
Entity Common Stock, Shares Outstanding   29,732,416
Entity Central Index Key 0001598665  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026