XML 12 R1.htm IDEA: XBRL DOCUMENT v3.8.0.1
Document and Entity Information - shares
 9 Months Ended
Mar. 31, 2018
May 01, 2018
Document Information [Line Items]    
Entity Registrant Name MALIBU BOATS, INC.  
Entity Central Index Key 0001590976  
Document Type 10-Q  
Document Period End Date Mar. 31, 2018  
Amendment Flag false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --06-30  
Entity Filer Category Accelerated Filer  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   20,525,136
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   17