FDIC-Assisted Acquired Loans - Consolidated Statements of Income (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
FDIC-Assisted Acquired Loans
Remaining accreted yield adjustment	$ 429	$ 1,600	$ 5,600

Represents the amount of remaining accreted yield adjustment on interest income.

No definition available.

Name:	gsbc_RemainingAccretedYieldAdjustment
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant