Loans and Allowance for Credit Losses - Financing Receivable, Troubled Debt Restructuring (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Commercial real estate
Loans and Allowance for Credit Losses
Interest Only		$ 1,768
Combination	$ 247		$ 559
Total Modification	247	1,768	559
One- to four-family residential
Loans and Allowance for Credit Losses
Interest Only		31
Term		202
Combination	32	134	1,030
Total Modification	32	367	1,030
Commercial business
Loans and Allowance for Credit Losses
Combination			22
Total Modification			22
Consumer
Loans and Allowance for Credit Losses
Term	4	259	16
Combination	3	11	1,951
Total Modification	7	270	1,967
Newly Restructured Modified Loans
Loans and Allowance for Credit Losses
Interest Only		1,799
Term	4	461	16
Combination	282	145	3,562
Total Modification	$ 286	$ 2,405	$ 3,578

Represents the monetary amount of Troubled Debt Restructuring Loans Interest Only, during the indicated time period.

No definition available.

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- Definition

Represents the monetary amount of Troubled Debt Restructuring Loans Modified Combination, during the indicated time period.

+ References

No definition available.

+ Details

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- Definition

Represents the monetary amount of Troubled Debt Restructuring Loans Modified Term, during the indicated time period.

+ References

No definition available.

+ Details

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Namespace Prefix:	gsbc_
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Balance Type:	debit
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Amount of financing receivable modified on trial basis.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

+ Details

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