XML 17 R1.htm IDEA: XBRL DOCUMENT v3.5.0.2
Document And Entity Information - USD ($)
 12 Months Ended
Jun. 30, 2016
Aug. 19, 2016
Dec. 25, 2015
Document Information [Line Items]      
Entity Registrant Name TWIN DISC INC    
Entity Central Index Key 0000100378    
Trading Symbol twin    
Current Fiscal Year End Date --06-30    
Entity Filer Category Accelerated Filer    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer No    
Entity Common Stock, Shares Outstanding (in shares)   11,438,573  
Entity Public Float     $ 95,679,464
Document Type 10-K    
Document Period End Date Jun. 30, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Amendment Flag false