| Document And Entity Information | Feb. 07, 2024 |
| Document Information [Line Items] | |
| Entity, Registrant Name | GEOSPACE TECHNOLOGIES CORPORATION |
| Document, Type | 8-K |
| Document, Period End Date | Feb. 07, 2024 |
| Entity, Incorporation, State or Country Code | TX |
| Entity, File Number | 001-13601 |
| Entity, Tax Identification Number | 76-0447780 |
| Entity, Address, Address Line One | 7007 Pinemont |
| Entity, Address, City or Town | Houston |
| Entity, Address, State or Province | TX |
| Entity, Address, Postal Zip Code | 77040 |
| City Area Code | 713 |
| Local Phone Number | 986-4444 |
| 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 | GEOS |
| Security Exchange Name | NASDAQ |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0001001115 |
