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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Narrative (Details) | 12 Months Ended
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Jun. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2020 USD ($) Segment | Jun. 30, 2020 USD ($) segment | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) segment | Jun. 30, 2018 USD ($)
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of reportable segments |  |  | 3 | 3 |  | 4 |
Allowance for doubtful accounts receivable, current | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 69,000 |
Capitalized offering costs | $ 140,000 | 140,000 | $ 140,000 | $ 140,000 | $ 140,000 | 140,000 |
Shelf registration costs capitalized |  |  |  |  |  | 60,000 |
Amount netted against proceeds of future offerings under shelf registration |  | 0 |  |  |  | 0 | $ 650,000
Impairment charges |  | 0 |  |  |  | 0 | 0
Impairment of intangible assets |  | $ 0 |  |  |  | $ 0 | $ 0
Tax receivable agreement, percentage of realized cash saving in tax to be pass through | 85.00% | 85.00% | 85.00% | 85.00% | 85.00% |  |
Malibu U.S., and Malibu Australia |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Number of reportable segments | segment |  |  |  | 1 |  |  |
Net Sales | Top Ten Dealers | Customer Concentration Risk |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 38.50% | 39.60% | 37.80%
Net Sales | OneWater Marine, Inc | Customer Concentration Risk |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Concentration risk, percentage |  |  |  |  | 15.20% | 15.10% | 10.70%
Minimum |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible asset, useful life | 5 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible asset, useful life | 20 years |  |  |  |  |  |
Non-compete agreement |  |  |  |  |  |  |
Organization, Basis of Presentation and Summary of Significant Accounting Policies [Line Items] |  |  |  |  |  |  |
Intangible asset, useful life | 10 years |  |  |  |  |  |

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