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Deposits - Weighted Average Interest Rate on Certificates of Deposit (Details)	Dec. 31, 2023	Dec. 31, 2022
Deposits.
Weighted average interest rate on certificates of deposit	3.79%	1.93%

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- Definition

Represents the Weighted average interest rate on certificates of deposit, as of the indicated date.

+ References

No definition available.

+ Details

Name:	gsbc_WeightedAverageInterestRateOnCertificatesOfDeposit
Namespace Prefix:	gsbc_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

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- References

No definition available.

+ Details

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