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Non-controlling Interest Narrative (Details) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Jun. 30, 2017
Noncontrolling Interest [Line Items] |  |  |
Tax distributions payable to non-controlling LLC Unit holders | $ 361 | $ 469 |
Non-controlling LLC Unit holders ownership in Malibu Boats Holdings, LLC |  |  |
Noncontrolling Interest [Line Items] |  |  |
Tax distributions payable to non-controlling LLC Unit holders | 361 |  | $ 309
Tax distributions paid to non-controlling LLC Unit holders | $ 602 | $ 583 |
Class A Common Stock [Member] |  |  |
Noncontrolling Interest [Line Items] |  |  |
Issuance LLC Units (in shares) | 2,582,797 |  |
Treasury Stock, Common [Member] |  |  |
Noncontrolling Interest [Line Items] |  |  |
Treasury stock, shares, retired (in shares) | (11,381,000) |  |

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