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Derivatives and Hedging Activities - Agreements with Derivative Counterparties (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
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Loan level swaps |  |
Derivatives and Hedging Activities |  |
Termination value of derivatives with derivative dealer counterparties |  | $ 1,200,000
Derivative counterparties collateral | $ 20,700,000 |
Net liability position | Balance sheet hedge |  |
Derivatives and Hedging Activities |  |
Termination value of derivatives with derivative dealer counterparties |  | 437,000
Cash collateral received from derivative counterparty |  | 390,000
Net asset position | Balance sheet hedge |  |
Derivatives and Hedging Activities |  |
Derivative counterparties collateral | $ 242,000 | $ 437,000

X
- Definition Amount of received cash collateral from another derivative counterparty. + References No definition available. + Details
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Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of derivative counterparties collateral, as of the indicated date. + References No definition available. + Details
Name: | gsbc_DerivativeCounterpartiesCollateral
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the monetary amount of termination value of derivatives with derivative dealer counterparties, as of the indicated date. + References No definition available. + Details
Name: | gsbc_TerminationValueOfDerivativesWithDerivativeDealerCounterparties
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- 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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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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- Details
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- Details
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Period Type: |