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DERIVATIVES AND HEDGING ACTIVITIES - Agreements with Derivative Counterparties (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021
Loan Level Swap
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative counterparties collateral	$ 20,800,000	$ 1,200,000
Net Liability Position | Balance Sheet Hedge
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Termination value of derivatives with derivative dealer counterparties	$ (21,700,000)	(437,000)
Cash collateral received from derivative counterparty		$ 390,000

X

- Definition

Amount of received cash collateral from another derivative counterparty.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsbc_
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Balance Type:	debit
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X

- Definition

Represents the monetary amount of derivative counterparties collateral, as of the indicated date.

+ 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 termination value of derivatives with derivative dealer counterparties, as of the indicated date.

+ References

No definition available.

+ Details

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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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X

- Details

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Namespace Prefix:
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X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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Namespace Prefix:
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