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Non-Option Equity Instruments, Weighted Average [Roll Forward] Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Weighted Average [Roll Forward] Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Acquisition Business Combination [Text Block] Exchange of LLC Units for Class A Common Stock Payable Pursuant To Tax Receivable Agreement, Increase (Decrease) Payable Pursuant To Tax Receivable Agreement, Increase (Decrease) Shares issued during period (in shares) Stock Repurchased During Period, Shares Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Entity File Number Entity File Number Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Stock-based compensation, net of withholding taxes on vested equity awards Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Common stock, shares issued (in shares) Common Stock, Shares, Issued Measure: Measure [Axis] Delaware Charter Lawsuit, Service Award to the Gray Plaintiff Delaware Charter Lawsuit, Service Award To The Gray Plaintiff [Member] Delaware Charter Lawsuit, Service Award To The Gray Plaintiff Cost of sales (excluding depreciation) Cost of Goods and Service, Excluding Depreciation, Depletion, and Amortization After Payments On Pro Forma Basis After Payments On Pro Forma Basis [Member] After Payments On Pro Forma Basis Schedule of Components of Finite-Lived Intangible Assets Intangible Asset, Finite-Lived, Acquired [Table Text Block] Equity Components [Axis] Equity Components [Axis] Contingently issuable shares (in shares) Incremental Common Shares Attributable to Dilutive Effect of Contingently Issuable Shares Additional Commitments And Related Transaction Additional Commitments And Related Transaction [Member] Additional Commitments And Related Transaction Trade receivables Increase (Decrease) in Accounts Receivable Product and Service [Domain] Product and Service [Domain] Class of Stock [Line Items] Class of Stock [Line Items] Cash refund for income taxes, net Income Tax Paid, after Refund Received Valuation allowance Deferred Tax Assets, Valuation Allowance Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Class A Common Stock Common Class A [Member] Entity Interactive Data Current Entity Interactive Data Current Variable Rate [Axis] Variable Rate [Axis] Net income since acquisition date Business Combination, Acquiree's Earnings (Loss) since Acquisition Date, Actual Net income (loss) attributable to non-controlling interest Net Income (Loss) Attributable to Noncontrolling Interest Deferred tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Exchange of LLC Units for Class A Common Stock (in shares) Stock Issued During Period, Shares, Conversion of Units Entity Smaller Reporting Company Entity Small Business Comprehensive income (loss) attributable to Malibu Boats, Inc., net of tax Comprehensive Income (Loss), Net of Tax, Attributable to Parent 2029 Lessee, Operating Lease, Liability, to be Paid, Year Three Termination Date Trading Arrangement Termination Date Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Acquired finite-lived intangible assets, weighted average useful life (in years) Estimated Useful Life (in years) Intangible Asset, Finite-Lived, Acquired, Weighted-Average Amortization Period Noncontrolling Interest [Table] Noncontrolling Interest [Table] Cobia Cobia [Member] Cobia Total definite-lived intangibles Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Finite-Lived Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Product Warranties Product Warranty Disclosure [Text Block] Other assets Other Assets, Noncurrent Document Type Document Type Accrued expenses Total accrued expenses Accrued Liabilities, Current Fair Value as of Grant Date Award Grant Date Fair Value Schedule of Finite Lived Intangible Assets and Infinite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets And Infinite Lived Intangible Assets [Table] Schedule Of Finite Lived Intangible Assets And Infinite Lived Intangible Assets Saxdor Saxdor [Member] Saxdor Goodwill [Table] Goodwill [Table] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Tax Receivable Agreement [Abstract] Tax Receivable Agreement [Abstract] Tax Receivable Agreement [Abstract] Arrangement Duration Trading Arrangement Duration Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Consolidation Items [Axis] Consolidation Items [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Income (loss) before provision for income taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Commitments and contingencies (See Note 17) Commitments and Contingencies Gross carrying amount Intangible Asset, Finite-Lived, before Accumulated Amortization Property, plant and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] 2030 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Four Income Tax Contingency [Table] Income Tax Contingency [Table] Machinery and equipment Machinery and Equipment [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount 2024 Performance Incentive Plan 2024 Performance Incentive Plan [Member] 2024 Performance Incentive Plan Executive Category: Executive Category [Axis] Structural Warranty and Gelcoat Structural Warranty And Gelcoat [Member] Structural Warranty And Gelcoat Goodwill [Roll Forward] Goodwill [Roll Forward] Furniture and fixtures Furniture and Fixtures [Member] Intangible Asset, Finite-Lived, Class [Domain] Intangible Asset, Finite-Lived, Class [Domain] Trade name Trade name Trade Names [Member] Inventories, net Total inventories Inventory, Net Award Type [Domain] Award Type [Domain] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Remainder of 2026 (fiscal year change transition period) Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Beginning balance Ending balance Standard and Extended Product Warranty Accrual Movement in Standard Product Warranty Accrual [Roll Forward] Movement in Standard Product Warranty Accrual [Roll Forward] Fair Value, Inputs, Level 3 Fair Value, Inputs, Level 3 [Member] Supplemental cash flow information: Supplemental Cash Flow Information [Abstract] Schedule of Contingent Consideration Business Combination, Contingent Consideration [Table Text Block] 2027 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year One Non-controlling Holders Ownership % Subsidiary, Ownership Percentage, Noncontrolling Owner PEO Name PEO Name Geographical [Axis] Geographical [Axis] Accrued expenses Increase (Decrease) in Accrued Liabilities Building and leasehold improvements Leasehold Improvements [Member] Customer deposit Beginning balance Ending balance Contract with Customer, Liability Other segment items Segment Reporting, Other Segment Item, Amount Property, Plant and Equipment, Type [Axis] Long-Lived Asset, Class [Axis] Cancelled shares in connection with the vesting of stock awards with a market condition (in shares) Common Shares Cancelled Due To Vesting Of Stock Awards With Market Condition Common Shares Cancelled Due To Vesting Of Stock Awards With Market Condition Principal payments on long-term borrowings Repayments of Secured Debt Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Measurement input (as percent) Business Combination, Contingent Consideration, Liability, Measurement Input Bow-to-stern Bow-to-stern [Member] Bow-to-stern Legal Entity [Axis] Legal Entity [Axis] Lessee, Lease, Description [Table] Lessee, Lease, Description [Table] Tax distributions payable to non-controlling LLC unit holders Distribution Made to Limited Liability Company (LLC) Member, Tax Distributions Payable Distribution Made to Limited Liability Company (LLC) Member, Tax Distributions Payable Schedule of Fair Value Estimates for Identifiable Assets Acquired Business Combination, Intangible Asset, Acquired, Finite-Lived and Indefinite-Lived [Table Text Block] Cash—Beginning of period Cash—End of period Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation Accrued legal and professional fees Accrued Professional Fees, Current Accounts payable Increase (Decrease) in Accounts Payable Less: Warranty claims paid Standard and Extended Product Warranty Accrual, Decrease for Payments Other accrued expenses Other Accrued Liabilities, Current Indefinite-lived intangible: Business Combination, Recognized Asset Acquired, Identifiable Intangible Asset, Indefinite-Lived Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Base Rate Base Rate [Member] Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Non-NEOs Non-NEOs [Member] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] Comprehensive income (loss) Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument [Axis] Debt Instrument [Axis] Other liabilities Business Combination, Recognized Liability Assumed, Other Liability, Noncurrent Non-cash compensation expense Share-Based Payment Arrangement, Noncash Expense 2028 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Two Schedule of Outstanding Debt Schedule of Debt [Table Text Block] Schedule of Inventories Schedule of Inventory, Current [Table Text Block] Leases Lessee, Operating Leases [Text Block] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Basic (in dollars per share) Basic net income (loss) per share (in dollars per share) Earnings Per Share, Basic Schedule of Assets and Liabilities, Lessee Schedule of Assets And Liabilities, Lessee [Table Text Block] Schedule of Assets And Liabilities, Lessee [Table Text Block] Measurement Input Type [Axis] Measurement Input Type [Axis] Customer deposits Contract with Customer, Liability, Current Tax credit carryforward, valuation allowance Tax Credit Carryforward, Valuation Allowance Total current assets Assets, Current Statistical Measurement [Axis] Statistical Measurement [Axis] Insider Trading Arrangements [Line Items] Long-term debt Long-term debt less current maturities Long-Term Debt, Excluding Current Maturities Award Type [Axis] Award Type [Axis] Payment of deferred financing costs Payments of Financing Costs Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Trade receivables, net Accounts Receivable, after Allowance for Credit Loss, Current Accumulated earnings Retained Earnings (Accumulated Deficit) Product and Service [Axis] Product and Service [Axis] Change in fair value of contingent consideration Fair value change of earnout Business Combination, Contingent Consideration, Change in Contingent Consideration, Liability, Increase (Decrease) Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Proceeds from long-term borrowings Proceeds from Issuance of Secured Debt Common Stock Common Stock [Member] Contingent consideration issued for acquisition Beginning balance Ending balance Business Combination, Contingent Consideration, Liability Fees and expenses Litigation Settlement, Fee Expense Operating lease costs Operating Lease, Cost Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Organization, Basis of Presentation, and Summary of Significant Accounting Policies Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Cover page. Cover [Abstract] International Foreign Non-US [Member] Noncontrolling Interest [Abstract] Noncontrolling Interest [Abstract] 2031 and thereafter Lessee, Operating Lease, Liability, to be paid, Due Year Five And Thereafter Lessee, Operating Lease, Liability, to be paid, Due Year Five And Thereafter Term Loan A Term Loan A Facility [Member] Term Loan A Facility Effect of foreign currency changes on goodwill Goodwill, Foreign Currency Translation, Gain (Loss) Equity Awards Adjustments Equity Awards Adjustments [Member] Total liabilities and stockholders' equity Liabilities and Equity Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items] Stock Options Share-Based Payment Arrangement, Option [Member] Schedule of Segment Reporting Information, by Segment [Table] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Non-controlling interest Equity, Attributable to Noncontrolling Interest Segments [Axis] Segments [Axis] Other liabilities Increase (Decrease) in Other Operating Liabilities Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Plan Name [Axis] Plan Name [Axis] Income Tax Jurisdiction [Domain] Income Tax Jurisdiction [Domain] Inventory Disclosure [Abstract] Inventory Disclosure [Abstract] Tabular List, Table Tabular List [Table Text Block] Additional paid in capital Additional Paid in Capital Tommy’s Boats Tommy’s Boats [Member] Tommy’s Boats Other expense (income), net Other Nonoperating Income (Expense) Schedule of Components of Indefinite-Lived Intangible Assets Intangible Asset, Indefinite-Lived, Acquired [Table Text Block] 2029 Intangible Asset, Finite-Lived, Estimated Amortization Expense, Year Three Schedule of Accrued Expenses Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] Remainder of 2026 (fiscal year change transition period) Intangible Asset, Finite-Lived, Estimated Amortization Expense, Remainder of Fiscal Year Other expense (income), net Other Operating Income (Expense), Net Name Awards Close in Time to MNPI Disclosures, Individual Name Business Combination, Contingent Consideration [Roll Forward] Business Combination, Contingent Consideration [Roll Forward] Business Combination, Contingent Consideration Non-Employee Directors Non-Employee Directors [Member] Non-Employee Directors [Member] Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period General and administrative General and Administrative Expense Property, Plant and Equipment, Type [Domain] Long-Lived Asset, Class [Domain] Minimum liquidity Debt Instrument, Covenant Compliance, Liquidity Threshold, Minimum Debt Instrument, Covenant Compliance, Liquidity Threshold, Minimum Engines Engines [Member] Engines Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred Stock, par value $0.01 per share; 25,000,000 shares authorized; no shares issued and outstanding as of September 30, 2026 and June 30, 2026 Preferred Stock, Value, Issued Noncontrolling LLC Unit Holders Noncontrolling LLC Unit Holders [Member] Noncontrolling LLC Unit Holders Adjustment to Compensation: Adjustment to Compensation [Axis] Product Warranties Disclosures [Abstract] Product Warranties Disclosures [Abstract] Class of Stock [Domain] Class of Stock [Domain] Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Parts and other sales Parts And Other Sales [Member] Part And Other Sales [Member] Cash paid for interest Interest Paid, Excluding Capitalized Interest, Operating Activity Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Recognized preliminary amounts of identifiable assets acquired and liabilities assumed, at fair value: Business Combination, Recognized Asset Acquired to Liability Assumed, Excess (Less) [Abstract] Corporate expenses and other Other General Expense Credit Facility [Axis] Credit Facility [Axis] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount Income Tax Jurisdiction [Axis] Income Tax Jurisdiction [Axis] Name Measure Name Income Taxes Income Tax Disclosure [Text Block] Accounts payable Accounts Payable, Current Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Contract with Customer, Liability [Roll Forward] Contract with Customer, Liability [Roll Forward] Contract with Customer, Liability Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Purchase price Business Combination, Consideration Transferred Additional Paid In Capital Additional Paid-in Capital [Member] Entity Filer Category Entity Filer Category Indefinite-lived Intangible Assets [Axis] Intangible Asset, Indefinite-Lived, Class [Axis] Saltwater Fishing Saltwater Fishing Saltwater Fishing [Member] Saltwater Fishing Payments under tax receivable agreement Payments Under Tax Receivable Agreement Payments Under Tax Receivable Agreement Accrued expenses Business Combination, Recognized Liability Assumed, Accrued Expenses Business Combination, Recognized Liability Assumed, Accrued Expenses Name Trading Arrangement, Individual Name Cash Cash and Cash Equivalent Expiration period Lessee, Operating Lease, Expiration Period Lessee, Operating Lease, Expiration Period Additions (reductions) to tax receivable agreement: Additions (Reductions) To Tax Receivable Agreement [Abstract] Additions (Reductions) To Tax Receivable Agreement Raw materials Inventory, Raw Materials, Net of Reserves Prepaid Expense and Other Assets, Current [Abstract] Operating Lease, Liability, Current, Statement of Financial Position [Extensible List] Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Company Selected Measure Amount Company Selected Measure Amount SOFR Secured Overnight Financing Rate (SOFR) [Member] Stock-based compensation, net of withholding taxes on vested equity awards (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Stock, Class of Stock [Table] Stock, Class of Stock [Table] Net income (loss) Net income (loss) Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Business combination, price per share (in usd per share) Business Combination, Price Per Share Current assets Assets, Current [Abstract] Weighted average remaining lease term (in years) Operating Lease, Weighted Average Remaining Lease Term Insurance recoveries Insurance Recoveries Net Sales Business Combination, Pro Forma Information, Pro Forma Revenue Non-PEO NEO Non-PEO NEO [Member] Entity Address, Address Line One Entity Address, Address Line One Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Provision for income taxes Income Tax Expense (Benefit) Cost of sales Cost of Product and Service Sold Award Timing Method Award Timing Method [Text Block] Loss Contingency, Nature [Domain] Loss Contingency, Nature [Domain] Principles of Consolidation Consolidation, Policy [Policy Text Block] Changes in cash Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Beginning balance Ending fiscal year balance Payable Pursuant To Tax Receivable Agreement Payable Pursuant To Tax Receivable Agreement Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Contingent consideration maximum potential payout Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount Net income (loss) attributable to Malibu Boats, Inc. Net income (loss) attributable to Malibu Boats, Inc. Net income (loss) attributable to Malibu Boats, Inc. Net Income (Loss) Attributable to Parent Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from sale of property and equipment Proceeds from Sale of Property, Plant, and Equipment Statement [Table] Statement [Table] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List] Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Restatement Determination Date: Restatement Determination Date [Axis] Litigation settlement, amount Litigation Settlement, Amount Awarded to Other Party Schedule of Customer Deposits and Significant Changes Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block] Federal Funds Fed Funds Effective Rate Overnight Index Swap Rate [Member] Standard product warranty, period Standard Product Warranty, Period Standard Product Warranty, Period Batchelder et al. v. Malibu Boats, LLC Batchelder et al. v. Malibu Boats, LLC [Member] Batchelder et al. v. Malibu Boats, LLC Unrealized gain on foreign currency exchange Unrealized Gain (Loss), Foreign Currency Transaction, before Tax Treasury stock, shares, retired (in shares) Treasury Stock, Shares, Retired Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] Prepaid expenses and other current assets Business Combination, Recognized Asset Acquired, Prepaid Expense and Other Asset, Current