| Document And Entity Information | Jul. 15, 2020 |
| Document Information [Line Items] | |
| Entity, Registrant Name | STANDEX INTERNATIONAL CORPORATION |
| Document, Type | 8-K |
| Document, Period End Date | Jul. 15, 2020 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 1-7233 |
| Entity, Tax Identification Number | 31-0596149 |
| Entity, Address, Address Line One | 23 Keewaydin Drive |
| Entity, Address, City or Town | Salem |
| Entity, Address, State or Province | NH |
| Entity, Address, Postal Zip Code | 03079 |
| City Area Code | 603 |
| Local Phone Number | 893-9701 |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | SXI |
| Security Exchange Name | NYSE |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000310354 |
