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Commitment and Contingencies (Details) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 06, 2015 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2015	Jun. 30, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Repurchase Units, Number			1
Litigation Settlement Payable		$ 20,000
Payments for Legal Settlements				$ (20,000)
Litigation settlement	$ 2,250

X

- Definition

Litigation Settlement payable

+ References

No definition available.

+ Details

Name:	mbuu_LitigationSettlementPayable
Namespace Prefix:	mbuu_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Repurchase Units, Number

+ References

No definition available.

+ Details

Name:	mbuu_RepurchaseUnitsNumber
Namespace Prefix:	mbuu_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

+ References

No definition available.

+ Details

Name:	us-gaap_LitigationSettlementAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



-Topic 230



-SubTopic 10



-Section 45



-Paragraph 25



-Subparagraph (g)



-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3536-108585

+ Details

Name:	us-gaap_PaymentsForLegalSettlements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration