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Stockholder's Equity (Details)
 12 Months Ended
Aug. 14, 2017
USD ($)
$ / shares
shares
May 27, 2015
$ / shares
shares
May 21, 2015
shares
Apr. 15, 2015
USD ($)
$ / shares
shares
Jul. 15, 2014
USD ($)
$ / shares
shares
Jun. 30, 2017
Vote
unit_holder
$ / shares
shares
Jun. 30, 2016
USD ($)
$ / shares
shares
Jun. 30, 2015
USD ($)
shares
Feb. 01, 2016
USD ($)
Apr. 09, 2015
shares
Mar. 13, 2015
USD ($)
$ / shares
Jun. 30, 2014
shares
Class of Stock [Line Items]                        
Capital Stock, Shares authorized           150,000,000            
Common stock, par value (per share) | $ / shares           $ 0.01            
Preferred stock, shares authorized           25,000,000 25,000,000          
Preferred stock, par value (per share) | $ / shares           $ 0.01 $ 0.01          
Number of Votes | Vote           1            
Number of LLC units outstanding (in shares)           19,198,314.000 19,095,797.000          
Number of unit holders | unit_holder           4            
Equity Method Investment, Ownership Percentage           100.00% 100.00%          
Treasury Stock Acquired, Average Cost Per Share | $ / shares             $ 13.82          
Stock Repurchased During Period, Value | $             $ 3,984,000 $ 71,523,000        
Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Common stock, shares authorized           100,000,000 100,000,000          
Common stock, par value (per share) | $ / shares           $ 0.01 $ 0.01          
Common stock, shares issued           17,690,874 17,937,687          
Issuance of common stock (shares)   3,996,255                    
Treasury Stock, Shares, Retired     19       1          
Share price (in dollars per share) | $ / shares   $ 19.05                    
Common stock, shares, outstanding           17,690,874 17,937,687          
Stock repurchase program, authorized amount | $                 $ 15,000,000      
Stock Repurchased During Period, Shares           252,686            
Conversion of previous classes of units into LLC units as part of the Recapitalization (in shares)   2,967,267                    
Common Stock [Member]                        
Class of Stock [Line Items]                        
Common stock, shares issued                   2,602,923    
Stock repurchase program, authorized amount | $                     $ 70,000,000  
stock repurchase per share | $ / shares       $ 21.00                
Stock Repurchased During Period, Shares       3,333,333     287,346          
Repurchase of Class A Common Stock | $       $ 70,000,000                
Unsolicited Tender Offer Costs | $       $ 1,523,000                
Common shares, canceled (in shares)             287,346          
Class B Common Stock [Member]                        
Class of Stock [Line Items]                        
Common stock, shares authorized           25,000,000 25,000,000          
Common stock, par value (per share) | $ / shares           $ 0.01 $ 0.01          
Common stock, shares issued           19 23 24        
Stock Repurchased and Retired During Period, Shares               0        
Common stock, shares, outstanding           19 23          
Additional Paid-in Capital [Member]                        
Class of Stock [Line Items]                        
Stock Repurchased During Period, Value | $             $ 3,981,000          
Common Stock [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares)               4,371,000        
Treasury Stock, Shares, Retired               3,333,000        
Common stock, shares, outstanding           17,938,000 17,690,000 17,859,000       11,064,000
Stock Repurchased During Period, Shares             288,000          
Conversion of previous classes of units into LLC units as part of the Recapitalization (in shares)           145,000 14,000 5,583,000        
Common Stock [Member] | Class B Common Stock [Member]                        
Class of Stock [Line Items]                        
Common stock, shares authorized           25,000,000            
Stock Repurchased and Retired During Period, Shares               20        
Common stock, shares, outstanding           19 23.000 24       44
Common shares, canceled (in shares)           4 1          
Malibu Boat LLC [Member] | Noncontrolling Interest [Member]                        
Class of Stock [Line Items]                        
Number of LLC units outstanding (in shares)           1,260,627 1,404,923          
Equity Method Investment, Ownership Percentage           6.60% 7.40%          
Stock Sold by Selling Stockholders [Member] | Subsequent Event [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares) 300,000                      
Minimum [Member]                        
Class of Stock [Line Items]                        
stock repurchase per share | $ / shares                     $ 21.00  
Maximum [Member]                        
Class of Stock [Line Items]                        
stock repurchase per share | $ / shares                     $ 23.50  
Over-Allotment Option [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares)   521,250                    
Over-Allotment Option [Member] | Stock Sold by Company [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares)         538,252              
Over-Allotment Option [Member] | Stock Sold by Selling Stockholders [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares)         181,748              
Follow-On Offering [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Proceeds from issuance of common stock | $         $ 76,836,000              
Underwriting discounts and commissions | $         $ 5,106,000              
Share price (in dollars per share) | $ / shares         $ 18.50              
Follow-On Offering [Member] | Common Stock [Member]                        
Class of Stock [Line Items]                        
Issuance of common stock (shares)         5,520,000              
Follow-On Offering [Member] | Subsequent Event [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Proceeds from issuance of common stock | $ $ 55,317,000                      
Underwriting discounts and commissions | $ $ 2,758,000                      
Issuance of common stock (shares) 2,300,000                      
Share price (in dollars per share) | $ / shares $ 24.05                      
Follow-On Offering [Member] | Stock Sold by Company [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Proceeds from issuance of common stock | $         $ 102,120,000              
Issuance of common stock (shares)         4,371,893              
Follow-On Offering [Member] | Stock Sold by Company [Member] | Subsequent Event [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Proceeds from issuance of common stock | $ $ 58,075,000                      
Follow-On Offering [Member] | Stock Sold by Selling Stockholders [Member] | Class A Common Stock [Member]                        
Class of Stock [Line Items]                        
Proceeds from issuance of common stock | $         $ 20,178,000              
Issuance of common stock (shares)         1,148,107