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Long-Term Debt - Additional Information (Details) - USD ($) |  | 9 Months Ended
--- | --- | ---
May 06, 2022 | Jun. 30, 2022
Debt Instrument [Line Items] |  |
Debt issuance costs |  | $ 211,000
The Agreement |  |
Debt Instrument [Line Items] |  |
Maximum amount of borrowing based upon assets | $ 10,000,000 |
Borrowing base as percentage of loan to value of property | 70.00% |
Borrowing base as percentage of forced liquidation value of equipment | 50.00% |
Borrowing base as percentage of assets | 80.00% |
Agreement term | 2 years |
Minimum consolidated tangible net worth | $ 100,000,000 |
Debt issuance costs |  | 200,000
Bborrowing availability |  | $ 8,500,000
The Agreement | Prime Rate |  |
Debt Instrument [Line Items] |  |
Interest rate on borrowed funds | 4.00% |
The Agreement | Prime Rate | Minimum |  |
Debt Instrument [Line Items] |  |
Interest rate on borrowed funds | 3.25% |
The Agreement | Inventory |  |
Debt Instrument [Line Items] |  |
Borrowing base as percentage of assets | 50.00% |
Borrowing base as percent of credit towards accounts receivable | 100.00% |

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- Definition Amount of line of credit facility remaining borrowing capacity based upon assets + References No definition available. + Details
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Namespace Prefix: | geos_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line of Credit Facility Borrowing Base as Percent of Assets + References No definition available. + Details
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Namespace Prefix: | geos_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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X
- Definition Line of credit facility borrowing base as percent of credit towards accounts receivable. + References No definition available. + Details
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Namespace Prefix: | geos_
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X
- Definition Line of credit facility borrowing base as percent of forced liquidation value of equipment. + References No definition available. + Details
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Namespace Prefix: | geos_
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- Definition Line of credit facility borrowing base as percent of loan to value of property. + References No definition available. + Details
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Namespace Prefix: | geos_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Maximum Amount Of Line Of Credit Facility Borrowing Based Upon Assets + References No definition available. + Details
Name: | geos_MaximumAmountOfLineOfCreditFacilityBorrowingBasedUponAssets
Namespace Prefix: | geos_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Minimum consolidated tangible net worth. + References No definition available. + Details
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Namespace Prefix: | geos_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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- Details
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- Details
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- Details
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- Details
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