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Segment Information Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Jun. 30, 2017
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Assets | $ 361,481 | $ 223,663
Malibu U.S. |  |
Segment Reporting Information [Line Items] |  |
Assets | 343,315 | 222,252
Malibu Australia |  |
Segment Reporting Information [Line Items] |  |
Assets | 19,926 | 19,099
Operating Segments [Member] | Cobalt Boats, LLC |  |
Segment Reporting Information [Line Items] |  |
Assets | 146,669 | 0
Intersegment Eliminations |  |
Segment Reporting Information [Line Items] |  |
Assets | $ (148,429) | $ (17,688)

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