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v3.25.2

OTHER REAL ESTATE OWNED AND REPOSSESSIONS - Expenses applicable to other real estate owned and repossessions (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
OTHER REAL ESTATE OWNED AND REPOSSESSIONS |  |  |  |
Net loss (gain) on sales of other real estate owned and repossessions | $ 1 | $ (36) | $ 5 | $ (33)
Operating expenses (income), net of rental income | (169) | 321 | (243) | 379
Expenses on other real estate owned and repossessions | $ (168) | $ 285 | $ (238) | $ 346

X
- Definition Amount of expenses (income) recognized during the period for the foreclosure on real estate assets. + References No definition available. + Details
Name: | gsbc_ForeclosedRealEstateExpenseIncome
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the monetary amount of Net (gain) loss on sales of other real estate owned, during the indicated time period. + References No definition available. + Details
Name: | gsbc_NetGainLossOnSalesOfOtherRealEstateOwned
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the monetary amount of Operating expenses, net of rental income, during the indicated time period. + References No definition available. + Details
Name: | gsbc_OperatingExpensesNetOfRentalIncome
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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