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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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+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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