Amount of payment in financing receivable modified during the period.

No definition available.

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Balance Type:	debit
Period Type:	duration

- Definition

Percentage of maximum of concession granted for respective classes of loan portfolios.

+ References

No definition available.

+ Details

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- Definition

Amount of minimum loan balance which are identified primarily by a classified risk rating required for collateral dependent loans including, but not limited to any loan in process of foreclosure or repossession.

+ References

No definition available.

+ Details

Name:	gsbc_MinimumLoanBalanceRequiredForCollateralDependentLoans
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- Definition

Amount of non-accrual loans for credit losses amortized cost.

+ References

No definition available.

+ Details

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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of troubled debt restructuring loan evaluated on individual.

+ References

No definition available.

+ Details

Name:	gsbc_TroubledDebtRestructuringLoanEvaluatedOnIndividual
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph c
-Publisher SEC

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

+ Details

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

- Definition

Amount of interest income on financing receivable on nonaccrual status.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 16
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-16

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of credit loss expense (reversal of expense) for financing receivable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-13

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(11))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LoanRestructuringModificationAxis=us-gaap_PrincipalForgivenessMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=gsbc_ConsumerAndLandDevelopmentPortfolioSegmentMember
Namespace Prefix:
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- Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_UnfundedLoanCommitmentMember
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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended
	Jan. 01, 2021	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
LOANS AND ALLOWANCE FOR CREDIT LOSSES
TDR loans evaluated on individual	$ 100,000
Interest income		$ 0	$ 0	$ 0	$ 0
Non-accrual loans for no related allowance amortized cost				2,400,000		$ 792,000
Minimum loan balance required for collateral-dependent loans		$ 100,000		100,000
Provision expense on its portfolio of outstanding loans				500,000	1,500,000
Provision for loan losses				$ 500,000	1,500,000
Maximum percentage of concessions granted of their respective classes of loan portfolios		1.00%		1.00%
Consumer \| Principal forgiveness
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loan paid during period			6,000		39,000
Consumer and land development \| Principal forgiveness
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Loan paid during period		$ 241,000		$ 255,000
Allowance for unfunded commitment
LOANS AND ALLOWANCE FOR CREDIT LOSSES
Provision for loan losses		$ (607,000)	$ (1,600,000)	$ (477,000)	$ (2,400,000)