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Long-Term Debt - Additional Information (Details) - USD ($) | May 06, 2022 | Dec. 31, 2022 | Sep. 30, 2022
--- | --- | --- | ---
Debt Instrument [Line Items] |  |  |
Total long-term debt outstanding |  | $ 0 | $ 0
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% |  |

X
- Definition Amount of line of credit facility remaining borrowing capacity based upon assets + References No definition available. + Details
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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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- Definition Line of credit facility borrowing base as percent of credit towards accounts receivable. + References No definition available. + Details
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- Definition Line of credit facility borrowing base as percent of forced liquidation value of equipment. + References No definition available. + Details
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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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X
- Definition Maximum Amount Of Line Of Credit Facility Borrowing 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 Minimum consolidated tangible net worth. + References No definition available. + Details
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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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- 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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X
- 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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X
- Definition The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 14 -URI https://asc.fasb.org/extlink&oid=99376301&loc=d3e1336-112600 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 45 -Paragraph 13 -URI https://asc.fasb.org/extlink&oid=99376301&loc=d3e1314-112600 + Details
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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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