OTHER REAL ESTATE OWNED AND REPOSSESSIONS - Schedule of Expenses Applicable to Foreclosed Assets (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Other Real Estate Owned and Repossessions
Net gains on sales of other real estate owned and repossessions	$ (6)	$ (46)
Valuation write-downs	15	82
Operating expenses, net of rental income	154	232
Expenses on real estate and repossessions	$ 163	$ 268

Represents the monetary amount of Net (gain) loss on sales of other real estate owned, during the indicated time period.

No definition available.

Name:	gsbc_NetGainLossOnSalesOfOtherRealEstateOwned
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration