Stock-Based Compensation - Additional Information Regarding Outstanding Unvested Restricted Stock (Details) - $ / shares	3 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	1,066,718	1,479,243
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	848,841	1,479,243
Award Date One \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	54,546
Share value at grant date per share (in dollars per share)	$ 7.02
Remaining Restriction Period (Years)	9 months 18 days
Award Date Two \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	253,918
Share value at grant date per share (in dollars per share)	$ 7.02
Remaining Restriction Period (Years)	1 year
Award Date Three \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	66,166
Share value at grant date per share (in dollars per share)	$ 11.88
Remaining Restriction Period (Years)	2 years
Award Date Four \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	285,986
Share value at grant date per share (in dollars per share)	$ 11.88
Remaining Restriction Period (Years)	1 year 9 months 18 days
Award Date Five \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	49,369
Share value at grant date per share (in dollars per share)	$ 26.98
Remaining Restriction Period (Years)	2 years 9 months 18 days
Award Date Six \| Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted shares unvested (in shares)	138,856
Share value at grant date per share (in dollars per share)	$ 26.98
Remaining Restriction Period (Years)	2 years 9 months 18 days

Heritage Insurance Holdings, Inc. 10-Q