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Organization, Basis of Presentation, and Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	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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