Document And Entity Information
| Document And Entity Information | Jan. 27, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | TWIN DISC, INCORPORATED |
| Document, Type | 8-K |
| Document, Period End Date | Jan. 27, 2021 |
| Entity, Incorporation, State or Country Code | WI |
| Entity, File Number | 001-7635 |
| Entity, Tax Identification Number | 39-0667110 |
| Entity, Address, Address Line One | 1328 Racine Street |
| Entity, Address, City or Town | Racine |
| Entity, Address, State or Province | WI |
| Entity, Address, Postal Zip Code | 53403 |
| City Area Code | 262 |
| Local Phone Number | 638-4000 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | TWIN |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000100378 |