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Short-Term Borrowings - Short-term borrowings (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Short-Term Borrowings. |  |
Weighted average interest rates of short-term borrowings | 2.16% | 0.02%
Short-term borrowings average | $ 181.1 | $ 145.3
Maximum amounts outstanding of short-term borrowing | $ 317.7 | $ 184.2

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- Definition Represents the monetary amount of Short term borrowing maximum amounts outstanding at any month end, 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

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- Definition Represents the monetary amount of Short-term borrowings average, as of the indicated date. + References No definition available. + Details
Name: | gsbc_ShortTermBorrowingsAverage
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_ShortTermBorrowingsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Weighted average interest rate of short-term debt outstanding calculated at point in time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant