FDIC-Assisted Acquired Loans - Consolidated Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
FDIC-Assisted Acquired Loans
Interest income and net impact to pre-tax income	$ 1,576	$ 5,574	$ 7,431
Remaining Accreted Yield Adjustment	$ 429,000

Represents the monetary amount of Net impact of acquired loan pools to pre-tax income, during the indicated time period.

No definition available.

Name:	gsbc_NetImpactOfAcquiredLoanPoolsToPreTaxIncome
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration