Note 15 - Subsequent Event (Details Textual) - Geovox [Member] - USD ($) $ in Millions	Jun. 01, 2027	Aug. 01, 2025
Forecast [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 0.2
Subsequent Event [Member]
BusinessCombination, ConsiderationTransferred, Cash Value		$ 1.7
Payments to Acquire Businesses, Gross		1.5
Business Combination, Contingent Consideration, Range of Outcomes, Maximum, Amount		$ 3.3
Business Combination, Contingent Consideration, Earn Out Period (Year)		4 years

Period for earn out of contingent consideration of a business combination.

No definition available.

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Namespace Prefix:	geos_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents the amount of cash value consideration transferred in the business combination.

+ References

No definition available.

+ Details

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Namespace Prefix:	geos_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

+ References

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-Topic 805
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- Definition

Maximum amount of estimate for undiscounted range of outcomes in contingent consideration arrangement in business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 805
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+ Details

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Period Type:	instant

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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+ Details

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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Period Type:

- Details

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