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Dividends [Axis] Dividends [Axis] Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Phone system Phone System [Member] Phone System [Member] Capitalized software development costs Payments for Software Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization Depreciation, Depletion and Amortization Premiums payable Premiums Payable, Current Premiums Payable, Current EBITDA ratio Debt Instrument, Earnings Ratio Debt Instrument, Earnings Ratio Schedule of Stock by Class [Table] Stock, Class of Stock [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Accounts and Financing Receivables [Table] Net income Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Distributions Payments of Distributions to Affiliates Renewal Royalty Fees Renewal Royalty Fees [Member] Renewal Royalty Fees Current Assets: Assets, Current [Abstract] Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Tax expense Income Tax Expense (Benefit) Award Timing Method Award Timing Method [Text Block] Basis of Combination Consolidation, Policy [Policy Text Block] Net increase (decrease) in cash and cash equivalents, and restricted cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Net income attributable to Goosehead Insurance, Inc. 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