Name:	gsbc_DebtSecuritiesReportedLessThanTheirHistoricalCostPercentOfInvestmentPortfolio
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Represents the monetary amount of fair value of debt securities reported less than their historical cost, as of the indicated date.

No definition available.

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Represents the Held-To-Maturity Investment Portfolio In Percentage.

No definition available.

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Data Type:	dtr-types:percentItemType
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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with interest rate reset through auction process, sold at par value.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Amount of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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Name:	us-gaap_HeldToMaturitySecuritiesFairValue
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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.

No definition available.