SECURITIES SOLD UNDER REVERSE REPURCHASE AGREEMENTS AND SHORT-TERM BORROWINGS - Schedule of Short-term Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
SECURITIES SOLD UNDER REVERSE REPURCHASE AGREEMENTS AND SHORT-TERM BORROWINGS
Notes payable - Community Development Equity Funds	$ 1,210	$ 1,083
Securities sold under reverse repurchase agreements	70,654	176,843
Overnight borrowings from the Federal Home Loan Bank	154,500	88,500
Short-term debt recorded value	$ 226,364	$ 266,426

Represents the monetary amount of Notes payable - Community Development Equity Funds, as of the indicated date.

No definition available.

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