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Non-controlling Interest - Ownership (Details) - shares | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | ---
Class of Stock [Line Items] |  |
Units (in shares) | 21,681,081 | 21,598,534
Ownership percentage | 100.00% | 100.00%
Non-controlling LLC Unit holders ownership in Malibu Boats Holdings, LLC | Malibu Boat LLC |  |
Class of Stock [Line Items] |  |
Units (in shares) | 844,652 | 1,043,186
Ownership percentage | 3.90% | 4.80%
Malibu Boats, Inc. ownership in Malibu Boats Holdings, LLC | Parent Company |  |
Class of Stock [Line Items] |  |
Units (in shares) | 20,836,429 | 20,555,348
Ownership percentage | 96.10% | 95.20%

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