XML 12 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document and Entity Information - shares
 9 Months Ended
Mar. 31, 2019
May 08, 2019
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, 2019  
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Current Fiscal Year End Date --06-30  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company true  
Entity Smaller Reporting Company false  
Entity Transition Period true  
Class A Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   20,851,097
Class B Common Stock    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding (in shares)   15