XML 55 R40.htm IDEA: XBRL DOCUMENT
v3.25.3

Note 9 - Inventories (Tables) | 12 Months Ended
--- | ---
Sep. 30, 2025
Notes Tables |
Schedule of Inventory, Current and Noncurrent [Table Text Block] |
|  | AS OF SEPTEMBER 30, |
|  | 2025 |  |  | 2024 |
Finished goods |  | $ | 24,180 |  |  | $ | 18,099 |
Work in process |  |  | 6,408 |  |  |  | 3,626 |
Raw materials |  |  | 27,245 |  |  |  | 30,941 |
Obsolescence reserve (net realizable value adjustment) |  |  | (9,819 | ) |  |  | (8,413 | )
|  |  | 48,014 |  |  |  | 44,253 |
Less current portion |  |  | 30,901 |  |  |  | 26,222 |
Non-current portion |  | $ | 17,113 |  |  | $ | 18,031 |

X
- Definition Tabular disclosure of inventories, current and noncurrent. + References No definition available. + Details
Name: | geos_ScheduleOfInventoryCurrentAndNoncurrentTableTextBlock
Namespace Prefix: | geos_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_TableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration