SIGNIFICANT ACCOUNTING POLICIES - Concentrations of Credit and Business Risk (Details) $ in Thousands	12 Months Ended
Jun. 30, 2018 USD ($) item	Jun. 30, 2017 USD ($) item	Jun. 30, 2016 USD ($) item
Concentrations of Credit and Business Risk
Accounts payable	$ 17,266	$ 11,008
MasterCraft \| Supplier Concentration Risk \| Cost of Goods \| Engine Supplier
Concentrations of Credit and Business Risk
Number of vendors \| item	1	1	1
Purchases during period	$ 34,734	$ 31,075	$ 31,232
Accounts payable	$ 3,227	$ 2,291
NauticStar \| Supplier Concentration Risk \| Cost of Goods \| Engine Supplier
Concentrations of Credit and Business Risk
Number of vendors \| item	1
Purchases during period	$ 19,668
Accounts payable	$ 1,261

Number of vendors.

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Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(a))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

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+ References

No definition available.

+ Details

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- Definition

Cost of materials used in goods produced and sold during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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