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Acquisition Intangible Assets Acquired (Details) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 6 Months Ended
--- | --- | ---
Oct. 23, 2014 | Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Preliminary Estimates of Fair Value | $ 4,558 us-gaap_FinitelivedIntangibleAssetsAcquired1 |
Franchise Rights [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Preliminary Estimates of Fair Value | 1,579 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_FranchiseRightsMember |
Finite-Lived Intangible Asset, Useful Life | 5 years | 5 years
Dealer Relationship [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Preliminary Estimates of Fair Value | 2,808 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = mbuu_DealerRelationshipMember |
Finite-Lived Intangible Asset, Useful Life | 15 years |
Noncompete Agreements [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Preliminary Estimates of Fair Value | 61 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_NoncompeteAgreementsMember |
Finite-Lived Intangible Asset, Useful Life | 10 years | 10 years
Order or Production Backlog [Member] |  |
Acquired Finite-Lived Intangible Assets [Line Items] |  |
Preliminary Estimates of Fair Value | $ 110 us-gaap_FinitelivedIntangibleAssetsAcquired1 / us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis = us-gaap_OrderOrProductionBacklogMember |
Finite-Lived Intangible Asset, Useful Life | 3 months 22 days | 3 months 22 days

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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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