| Document And Entity Information | May 23, 2024 |
| Document Information [Line Items] | |
| Entity, Registrant Name | The L.S. Starrett Company |
| Current Fiscal Year End Date | --06-30 |
| Document, Type | 8-K |
| Document, Period End Date | May 23, 2024 |
| Entity, Incorporation, State or Country Code | MA |
| Entity, File Number | 1-367 |
| Entity, Tax Identification Number | 04-1866480 |
| Entity, Address, Address Line One | 121 Crescent Street |
| Entity, Address, City or Town | Athol |
| Entity, Address, State or Province | MA |
| Entity, Address, Postal Zip Code | 01331 |
| City Area Code | 978 |
| Local Phone Number | 249-3551 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Class A Common - $1.00 Per Share Par Value |
| Trading Symbol | SCX |
| Security Exchange Name | NYSE |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000093676 |
