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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.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended	12 Months Ended
	Oct. 15, 2018	Jul. 06, 2017	Dec. 31, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Goodwill			$ 51,410	$ 32,230
Pursuit
Business Acquisition [Line Items]
Fair value of total consideration transferred	$ 100,073
Goodwill	19,502
Acquisition related costs			$ 2,809
Cash consideration paid	$ 100,073
Cobalt Boats, LLC
Business Acquisition [Line Items]
Fair value of total consideration transferred		$ 130,525
Goodwill		$ 19,791
Acquired finite-lived intangible assets, weighted average useful life		19 years 9 months 18 days
Acquisition related costs				$ 3,056
Cash consideration paid		$ 129,525
Equity consideration paid		$ 1,000
Business acquisition, share price (in dollars per share)		$ 25.47
Dealer relationships \| Pursuit
Business Acquisition [Line Items]
Acquired finite-lived intangible assets, weighted average useful life	20 years
Dealer relationships \| Cobalt Boats, LLC
Business Acquisition [Line Items]
Useful Life (in years)		20 years
Acquired finite-lived intangible assets, weighted average useful life		20 years
Patent \| Cobalt Boats, LLC
Business Acquisition [Line Items]
Useful Life (in years)		15 years
Common Stock \| Cobalt Boats, LLC \| Class A Common Stock
Business Acquisition [Line Items]
Issuance of Class A common stock for offerings, net of underwriting discounts (in shares)		39,262