Stock Compensation Plans - Nonvested Options Granted Unrecognized Compensation Cost (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($)
Stock Compensation Plans
Nonvested Options Granted Unrecognized Compensation Costs	$ 5.5

Represents the monetary amount of Nonvested Options Granted Unrecognized Compensation Costs, as of the indicated date.

No definition available.

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