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Non-controlling Interest Ownership (Details) - shares | Sep. 30, 2017 | Jun. 30, 2017
--- | --- | ---
Class of Stock [Line Items] |  |
Units (in shares) | 21,536,155 | 19,198,314
Ownership % | 100.00% | 100.00%
Non-controlling LLC Unit holders ownership in Malibu Boats Holdings, LLC | Malibu Boat LLC [Member] |  |
Class of Stock [Line Items] |  |
Units (in shares) | 1,251,148 | 1,260,627
Ownership % | 5.80% | 6.60%
Malibu Boats, Inc. ownership in Malibu Boats Holdings, LLC | Parent Company [Member] |  |
Class of Stock [Line Items] |  |
Units (in shares) | 20,285,007 | 17,937,687
Ownership % | 94.20% | 93.40%

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