| Document And Entity Information | Oct. 20, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 20, 2022 |
| Entity Registrant Name | Lindsay Corporation |
| Entity Central Index Key | 0000836157 |
| Entity Emerging Growth Company | false |
| Securities Act File Number | 1-13419 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 47-0554096 |
| Entity Address, Address Line One | 18135 Burke Street |
| Entity Address, Address Line Two | Suite 100 |
| Entity Address, City or Town | Omaha |
| Entity Address, State or Province | NE |
| Entity Address, Postal Zip Code | 68022 |
| City Area Code | (402) |
| Local Phone Number | 829-6800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, $1.00 par value |
| Trading Symbol | LNN |
| Security Exchange Name | NYSE |
