Nature of Operations and Basis of Presentation (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Nature of Operations	Nature of Operations Universal Insurance Holdings, Inc., (“UIH”) is a Delaware corporation originally incorporated as Universal Heights, Inc., in November 1990. UIH with its wholly-owned subsidiaries (the “Company”), is a vertically integrated insurance holding company performing all aspects of insurance underwriting, distribution and claims. Through its wholly-owned subsidiaries, Universal Property & Casualty Insurance Company (“UPCIC”) and American Platinum Property and Casualty Insurance Company (“APPCIC”), together referred to as the “Insurance Entities,” the Company is principally engaged in the property and casualty insurance business offered primarily through a network of independent agents. Risk from catastrophic losses is managed through the use of reinsurance agreements. The Company’s primary product is homeowners insurance offered in ten states as of September 30, 2015, including Florida, which comprises the vast majority of the Company’s in-force policies. See “—Note 5 (Insurance Operations)” for more information regarding the Company’s insurance operations. The Company generates revenues primarily from the collection of premiums and invests funds in excess of those retained for claims-paying obligations and insurance operations. Other significant sources of revenue include brokerage commissions collected from reinsurers, policy fees collected from policyholders by our wholly-owned managing general agency subsidiary and payment plan fees charged to policyholders who choose to pay their premiums in installments.
Basis of Presentation	Basis of Presentation The Company has prepared the accompanying unaudited Condensed Consolidated Financial Statements (“Financial Statements”) in accordance with the rules and regulations of the United States Securities and Exchange Commission (“SEC”) for interim financial information. Accordingly, the Financial Statements do not include all of the information and footnotes required by United States Generally Accepted Accounting Principles (“GAAP”) for complete financial statements. Therefore, the Financial Statements should be read in conjunction with the audited Consolidated Financial Statements contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014, filed with the SEC on February 25, 2015. The condensed consolidated balance sheet at December 31, 2014, was derived from audited financial statements, but does not include all disclosures required by GAAP. In the opinion of management, all adjustments (consisting of normal recurring adjustments) necessary for a fair presentation have been included in the Financial Statements. The results for interim periods do not necessarily indicate the results that may be expected for any other interim period or for the full year. To conform to the current period presentation, certain amounts in the prior periods’ consolidated financial statements and notes have been reclassified. Such reclassifications were of an immaterial amount and had no effect on net income or stockholders’ equity. The Financial Statements include the accounts of UIH and its wholly-owned subsidiaries. All material intercompany balances and transactions have been eliminated in consolidation. Management must make estimates and assumptions that affect amounts reported in the Company’s Financial Statements and in disclosures of contingent assets and liabilities. Actual results could differ from those estimates.
Goodwill	Goodwill. Goodwill arising from the acquisition of a business is initially measured at cost and not subject to amortization. We assess goodwill for potential impairments at the end of each fiscal year, or during the year if an event or other circumstance indicates that we may not be able to recover the carrying amount of the asset. Goodwill is included under Other Assets in the Condensed Consolidated Balance Sheets.
Investment Real Estate	Investment Real Estate. Investment real estate is recorded at cost less accumulated depreciation. Depreciation is calculated on a straight-line basis over the estimated useful life of the assets. Investment real estate is evaluated for impairment when events or circumstances indicate the carrying value may not be recoverable.