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Acquisition Pro forma (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Business Acquisition [Line Items]
Net sales	$ 103,541	$ 62,021
Net income	6,414	4,226
Net income attributable to Malibu Boats, Inc.	$ 5,885	$ 3,780
Basic (in dollars per share)	$ 0.31	$ 0.21
Diluted (in dollars per share)	$ 0.31	$ 0.21
Cobalt Boats, LLC | Pro Forma [Member]
Business Acquisition [Line Items]
Net sales	$ 103,541	$ 95,310
Net income	6,737	4,255
Net income attributable to Malibu Boats, Inc.	$ 6,178	$ 3,849
Basic (in dollars per share)	$ 0.32	$ 0.20
Diluted (in dollars per share)	$ 0.32	$ 0.20

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