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Non-controlling Interest - Ownership (Details) - shares	Sep. 30, 2020	Jun. 30, 2020
Class of Stock [Line Items]
Units (in shares)	21,333,307	21,326,621
Ownership %	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)	702,869	730,652
Ownership %	3.30%	3.40%
Malibu Boats, Inc. ownership in Malibu Boats Holdings, LLC | Parent Company
Class of Stock [Line Items]
Units (in shares)	20,630,438	20,595,969
Ownership %	96.70%	96.60%

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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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