Entity tax identification number Entity Tax Identification Number Rollovers EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Rollover Maximum Maximum [Member] Legal Entity [Axis] Legal Entity [Axis] Statistical Measurement [Domain] Statistical Measurement [Domain] EBP, Description of Plan [Table] EBP, Description of Plan [Table] Mutual funds Mutual Fund [Member] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Related Party and Party-in-Interest Transactions [Table] EBP, Accounting Standard Update and Change in Accounting Principle [Table] EBP, Accounting Standard Update and Change in Accounting Principle [Table] Total deductions EBP, Change in Net Asset Available for Benefit, Decrease Self-directed brokerage accounts EBP, Self-Directed Brokerage Account [Member] Maximum borrowing amount EBP, Note Receivable from Participant, Account, Maximum Borrowing, Amount Threshold account balance for single lump-sum payment EBP, Threshold Account Balance For Single Lump-Sum Payment EBP, Threshold Account Balance For Single Lump-Sum Payment FAIR VALUE MEASUREMENTS EBP, Investment, Fair Value and NAV [Text Block] Minimum borrowing amount EBP, Note Receivable from Participant, Account, Minimum Borrowing, Amount Restricted percentage of participant contribution EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Percentage EBP, Participant Contribution, Maximum Contribution to Eligible Compensation, Percentage of Participant Aggregate value EBP, Investment, Excluding Plan Interest In Master Trust, Aggregate, Fair Value EBP, Investment, Excluding Plan Interest In Master Trust, Aggregate, Fair Value EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] EBP, Employer Contribution, Type [Domain] Total participant-directed investments Total Fair value EBP, Investment, Excluding Plan Interest in Master Trust, Fair Value EBP, Employer Contribution, Vesting Period Five EBP, Employer Contribution, Vesting Period Five [Member] EBP, Employer Contribution, Vesting Period Five Miscellaneous EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Miscellaneous EBP, Reconciliation to Form 5500, Net Asset Available for Benefit, Miscellaneous Money Market Funds Money Market Funds [Member] Level 1 Fair Value, Inputs, Level 1 [Member] Schedule of Reconciliation of Net Assets Available for Benefits EBP, Reconciliation of Financial Statement to Form 5500 [Table Text Block] EBP, Investment, Fair Value and NAV [Abstract] Schedule of Investment Fund Concentrations EBP, Investment Fund Concentrations [Table Text Block] EBP, Investment Fund Concentrations Schedule of Common Stock Activity in the Common Stock Fund EBP, Related Party and Party-in-Interest Transactions [Table Text Block] Total assets EBP, Asset ASSETS: EBP, Asset [Abstract] Participant loans term (in years) EBP, Participant Loans, Term EBP, Participant Loans, Term Statistical Measurement [Axis] Statistical Measurement [Axis] ADDITIONS TO NET ASSETS: EBP, Change in Net Asset Available for Benefit, Increase [Abstract] EBP, Statement of Change in Net Asset Available for Benefit [Table] EBP, Statement of Change in Net Asset Available for Benefit [Table] Minimum account balance required for installment payments EBP, Minimum Account Balance Required For Installment Payments EBP, Minimum Account Balance Required For Installment Payments Benefit Payments EBP, Payment to Participant [Policy Text Block] Borrowing term (in years) EBP, Note Receivable From Participant, General Loan, Borrowing Term EBP, Note Receivable From Participant, General Loan, Borrowing Term Amendment Flag Amendment Flag Basis of Accounting EBP, Basis of Accounting [Policy Text Block] EBP, Schedule of Asset Held for Investment [Table] EBP, Schedule of Asset Held for Investment [Table] Number of shares (in shares) Shares owned (in shares) EBP, Investment, Number of Shares EBP, Description of Plan and Accounting Change [Abstract] Contributions receivable: EBP, Receivable [Abstract] Schedule of Assets Measured at Fair Value on a Recurring Basis EBP, Investment, Fair Value and NAV [Table Text Block] Variable rate (as a percent) EBP, ERISA, Participant Loans, Spread On Variable Rate EBP, ERISA, Participant Loans, Spread On Variable Rate EBP, Employer Contribution, Vesting Period Four EBP, Employer Contribution, Vesting Period Four [Member] EBP, Employer Contribution, Vesting Period Four Investments [Domain] Investments [Domain] Use of Estimates EBP, Use of Estimate [Policy Text Block] SCHEDULE OF ASSETS HELD AT END OF YEAR FORM 5500 - SCHEDULE H, PART IV, LINE 4(i) EBP, Schedule of Asset Held for Investment [Text Block] Cover [Abstract] Employer EBP, Change in Net Asset Available for Benefit, Increase from Employer Contribution, Cash Total contributions receivables EBP, Receivable Excluding Note Receivable From Participant EBP, Receivable Excluding Note Receivable From Participant Shares purchased (in shares) EBP, Investment, Purchased, Number of Shares Minimum Minimum [Member] Interest income on notes receivable from participants EBP, Change in Net Asset Available for Benefit, Increase from Interest Income on Note Receivable from Participant Investment Type [Axis] Investment Type [Axis] Total contributions EBP, Change in Net Asset Available for Benefit, Increase from Contribution Participants EBP, Change in Net Asset Available for Benefit, Increase from Participant Contribution, Excluding Rollover EBP, Common Stock Fund and Self-Directed Brokerage Account EBP, Common Stock Fund and Self-Directed Brokerage Account [Member] EBP, Common Stock Fund and Self-Directed Brokerage Account Net appreciation in fair value of investments EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Gain (Loss) on Investment Interest and dividends EBP, Change in Net Asset Available for Benefit, Increase from Interest and Dividend Income on Investment EBP, Description of Plan [Line Items] EBP, Description of Plan [Line Items] Plan number EBP, Plan Number EBP, Investment, Fair Value and NAV [Line Items] EBP, Investment, Fair Value and NAV [Line Items] DESCRIPTION OF THE PLAN EBP, Description of Plan [Text Block] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Change in Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Statement of Net Asset Available for Benefit [Table] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Schedule of Asset Held for Investment [Line Items] EBP, Employer Contribution, Vesting Period Two EBP, Employer Contribution, Vesting Period Two [Member] EBP, Employer Contribution, Vesting Period Two Universal Insurance Holdings Common Stock Fund EBP, Employer, Common Stock [Member] EBP, Schedule of Asset Held for Investment [Abstract] Total additions EBP, Change in Net Asset Available for Benefit, Increase Investment income: EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment [Abstract] Investment, Identifier [Axis] Investment, Identifier [Axis] Administrative expenses EBP, Change in Net Asset Available for Benefit, Decrease from Administrative Expense Total EBP, Asset Held for Investment Risks and Uncertainties EBP, Risk and Uncertainty [Policy Text Block] Document Information [Line Items] Document Information [Line Items] Interest-Bearing Cash Interest-Bearing Deposits [Member] Change in excess contributions payable EBP, Reconciliation to Form 5500, Change in Excess Contribution Payable EBP, Reconciliation to Form 5500, Change in Excess Contribution Payable Percentage of eligible employee compensation matched EBP, Employer Contribution, Participant Compensation Matched, Percentage EBP, Statement of Change in Net Asset Available for Benefit [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] Shares sold (in shares) EBP, Investment, Sold, Number of Shares Corporate Common Stock, Mutual Funds, and Exchange-Traded Funds Equity Securities [Member] Schedule of Employer Discretionary Contributions EBP, Employer Contribution, Vesting [Table Text Block] EBP, Employer Contribution Vesting Net income per Form 5500 EBP, Form 5500 Caption, Net Income (Loss) EBP, Tax Status [Table] EBP, Tax Status [Table] NET INCREASE Net increase per the financial statements EBP, Change in Net Asset Available for Benefit, Increase (Decrease) Requisite service period (in months) EBP, Requisite Service Period EBP, Requisite Service Period RELATED PARTIES EBP, Related Party and Party-in-Interest Transactions [Text Block] EBP, Related Party and Party-in-Interest Transactions [Abstract] EBP, Accounting Policy, Accounting Standard Update, and Change in Accounting Principle [Abstract] LIABILITIES - Excess contributions payable Excess contributions payable EBP, Excess Contribution Payable Employer EBP, Employer Contribution, Receivable Participant directed investments at fair value: EBP, Investment, Fair Value [Abstract] Dividend income EBP, Change in Net Asset Available for Benefit, Increase from Dividend Income on Investment Benefits paid directly to participants or beneficiaries EBP, Change in Net Asset Available for Benefit, Decrease from Payment to Participant Current Value EBP, Asset Held for Investment, Investment, Excluding Plan Interest in Master Trust, Current Value Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Maximum loans per participant EBP, Maximum Loans Per Participant EBP, Maximum Loans Per Participant EBP 001 EBP 001 [Member] EBP 001 EBP, Statement of Net Asset Available for Benefit [Abstract] Age for eligibility (in years) EBP, Age For Eligibility EBP, Age For Eligibility EBP, Tax Status [Abstract] Universal Insurance Holdings Common Stock Fund EBP, Employer, Common Stock Fund [Member] EBP, Reconciliation of Financial Statement to Form 5500 [Table] EBP, Reconciliation of Financial Statement to Form 5500 [Table] Employee contribution (as a percent) EBP, Employee Contribution, Percentage EBP, Employee Contribution, Percentage EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] EBP, Reconciliation of Financial Statement to Form 5500 [Line Items] Administrative Expenses EBP, Expense [Policy Text Block] RECONCILIATION TO FORM 5500 EBP, Reconciliation of Financial Statement to Form 5500 [Text Block] Investment Valuation and Income Recognition EBP, Investment [Policy Text Block] Participants EBP, Participant Contribution, Receivable Fair Value, Inputs, Level 1, Level 2, and Level 3 Fair Value, Inputs, Level 1, Level 2, and Level 3 [Member] EBP, Accounting Standard Update and Change in Accounting Principle [Line Items] EBP, Accounting Standard Update and Change in Accounting Principle [Line Items] Document Type Document Type CIK Entity Central Index Key Participant loan, interest rate EBP, Asset Held for Investment, Participant Loan, Interest Rate EBP, Reconciliation of Financial Statement to Form 5500 [Abstract] NET ASSETS AVAILABLE FOR BENEFITS: EBP, Net Asset Available for Benefit [Abstract] EBP, Tax Status [Line Items] EBP, Tax Status [Line Items] Vested Percentage EBP, Employer Contribution, Vesting Percentage EBP, Employer Contribution, Vesting Percentage EBP, Subsequent Event [Table] EBP, Subsequent Event [Table] DEDUCTIONS FROM NET ASSETS: EBP, Change in Net Asset Available for Benefit, Decrease [Abstract] Reduction in employer contributions EBP, Forfeited Nonvested Account, Decrease from Employer Contribution Notes receivable from participants EBP, Note Receivable from Participant Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES EBP, Summary of Accounting Policy [Text Block] Entity Registrant Name Entity Registrant Name Uninvested cash EBP, Investment, Uninvested Cash EBP, Investment, Uninvested Cash EBP, Subsequent Event [Abstract] SUBSEQUENT EVENTS EBP, Subsequent Event [Text Block] Change in miscellaneous EBP, Reconciliation to Form 5500, Miscellaneous Changes EBP, Reconciliation to Form 5500, Miscellaneous Changes TAX STATUS EBP, Tax Status [Text Block] Maximum borrowing, to total account (as a percent) EBP, Note Receivable from Participant, Account, Maximum Borrowing, to Total Account, Percentage % of Total Fair Value EBP, Risk and Uncertainty, Concentration of Investment at Fair Value to Total Investments, Percentage EBP, Employer Contribution, Vesting Period One EBP, Employer Contribution, Vesting Period One [Member] EBP, Vesting, First Tranche Of Service EBP, Subsequent Event [Line Items] EBP, Subsequent Event [Line Items] Years of Service EBP, Employer Contribution, Vesting Service Period EBP, Employer Contribution, Vesting Service Period Document Information [Table] Document Information [Table] EBP, Employer Contribution, Vesting Period Three EBP, Employer Contribution, Vesting Period Three [Member] EBP, Employer Contribution, Vesting Period Three Notes Receivable from Participants EBP, Note Receivable from Participant [Policy Text Block] Total investment income EBP, Change in Net Asset Available for Benefit, Increase (Decrease) from Income (Loss) on Investment EBP, Related Party and Party-in-Interest Transactions [Line Items] EBP, Related Party and Party-in-Interest Transactions [Line Items] Level 3 Fair Value, Inputs, Level 3 [Member] NET ASSETS AVAILABLE FOR BENEFITS Beginning of year End of year Net assets available for benefits per the financial statements EBP, Net Asset Available for Benefit Entity [Domain] Entity [Domain] Contributions: EBP, Change in Net Asset Available for Benefit, Increase from Contribution [Abstract] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type [Axis] EBP, Employer Contribution, Type Forfeiture account balance EBP, Forfeited Nonvested Account Employer matching contribution (as a percent) EBP, Employer Contribution, Matching Percentage Net assets per Form 5500 EBP, Form 5500 Caption, Net Assets EBP, Investment, Fair Value and NAV [Table] EBP, Investment, Fair Value and NAV [Table] EBP, Statement of Net Asset Available for Benefit [Line Items] EBP, Statement of Net Asset Available for Benefit [Line Items]