Basis of Presentation and Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation The condensed consolidated financial statements include the accounts of Heritage Insurance Holdings, Inc. (together with its subsidiaries, the “Company”). These statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain financial information that is normally included in annual consolidated financial statements prepared in accordance with GAAP, but that is not required for interim reporting purposes, has been omitted. In the opinion of the Company’s management, all material intercompany transactions and balances have been eliminated and all adjustments consisting of normal recurring accruals which are necessary for a fair statement of the financial condition and results of operations for the interim periods have been reflected. The accompanying interim condensed consolidated financial statements and related footnotes should be read in conjunction with the Company’s audited consolidated financial statements and related footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Form 10-K”)
Reclassification	Reclassification Certain prior year amounts reported on the condensed consolidated balance sheet have been reclassified to conform to the current year presentation.
Accounting Pronouncements Not Yet Adopted	Accounting Pronouncements not yet adopted The Company has documented the summary of its significant accounting policies in its Notes to the Audited Consolidated Financial Statements annual report on Form 10-K for the year ended December 31, 2020, filed on March 9, 2021. There have been no material changes to the Company’s accounting policies since the filing of that report. No other new accounting pronouncements issued but not yet effective have had, or are expected to have, a material impact on the Company’s results of operations or financial position.

Basis of Presentation and Significant Accounting Policies (Policies)

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

The condensed consolidated financial statements include the accounts of Heritage Insurance Holdings, Inc. (together with its subsidiaries, the “Company”). These statements have been prepared in accordance with generally accepted accounting principles for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Certain financial information that is normally included in annual consolidated financial statements prepared in accordance with GAAP, but that is not required for interim reporting purposes, has been omitted. In the opinion of the Company’s management, all material intercompany transactions and balances have been eliminated and all adjustments consisting of normal recurring accruals which are necessary for a fair statement of the financial condition and results of operations for the interim periods have been reflected. The accompanying interim condensed consolidated financial statements and related footnotes should be read in conjunction with the Company’s audited consolidated financial statements and related footnotes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020 (the “2020 Form 10-K”)

Reclassification

Certain prior year amounts reported on the condensed consolidated balance sheet have been reclassified to conform to the current year presentation.

Accounting Pronouncements Not Yet Adopted

Accounting Pronouncements not yet adopted

The Company has documented the summary of its significant accounting policies in its Notes to the Audited Consolidated Financial Statements annual report on Form 10-K for the year ended December 31, 2020, filed on March 9, 2021. There have been no material changes to the Company’s accounting policies since the filing of that report.

No other new accounting pronouncements issued but not yet effective have had, or are expected to have, a material impact on the Company’s results of operations or financial position.