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Litigation Matters (Details) $ in Millions	Dec. 31, 2024 USD ($)
Litigation Matters
Accrued Expense Related to Development Agreement As Per Litigation Settlement	$ 2.0

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- Definition

The accrued expense related to the developments in the agreement with the third-party vendor, which includes the termination of the Master Agreement and the continuation and expansion of the card servicing agreement. This amount has been recorded in connection with these developments and the associated litigation.

+ References

No definition available.

+ Details

Name:	gsbc_AccruedExpenseRelatedToDevelopmentAgreementAsPerLitigationSettlement
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

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- References

No definition available.

+ Details

Name:	us-gaap_LossContingencyInformationAboutLitigationMattersAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration