XML 132 R118.htm IDEA: XBRL DOCUMENT v3.20.4

Disclosures About Fair Value of Financial Instruments - Schedule Of Financial Instruments Fair Value (Details) $ in Thousands	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Unrecognized financial instruments (net of contractual value) | Commitments to Originate Loans
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Letter of Credit
Financial Instruments Owned Carrying Amount	$ 84	$ 109
Financial Instruments, Owned, at Fair Value	$ 84	$ 109
Fair Value Hierarchy Level	3	3
Unrecognized financial instruments (net of contractual value) | Line of Credit
Fair Value Hierarchy Level	3	3
Financial Assets | Loans Receivable
Financial Instruments Owned Carrying Amount	$ 4,296,804	$ 4,153,982
Financial Instruments, Owned, at Fair Value	$ 4,303,909	$ 4,129,984
Fair Value Hierarchy Level	3	3
Financial Assets | Cash and Cash Equivalents
Financial Instruments Owned Carrying Amount	$ 563,729	$ 220,155
Financial Instruments, Owned, at Fair Value	$ 563,729	$ 220,155
Fair Value Hierarchy Level	1	1
Financial Assets | Mortgage loans held for sale
Financial Instruments Owned Carrying Amount	$ 17,780	$ 9,242
Financial Instruments, Owned, at Fair Value	$ 17,780	$ 9,242
Fair Value Hierarchy Level	2	2
Financial Assets | Interest Receivable
Financial Instruments Owned Carrying Amount	$ 12,793	$ 13,530
Financial Instruments, Owned, at Fair Value	$ 12,793	$ 13,530
Fair Value Hierarchy Level	3	3
Financial Assets | Investment in FHLBank stock and other interest-earning assets
Financial Instruments Owned Carrying Amount	$ 9,806	$ 13,473
Financial Instruments, Owned, at Fair Value	$ 9,806	$ 13,473
Fair Value Hierarchy Level	3	3
Financial Liabilities
Fair Value Hierarchy Level	3
Financial Liabilities | Junior Subordinated Debt
Financial Instruments Owned Carrying Amount	$ 25,774	$ 25,774
Financial Instruments, Owned, at Fair Value	25,774	$ 25,774
Fair Value Hierarchy Level		3
Financial Liabilities | Subordinated Debt
Financial Instruments Owned Carrying Amount	148,397	$ 74,276
Financial Instruments, Owned, at Fair Value	$ 157,032	$ 76,875
Fair Value Hierarchy Level	2	2
Financial Liabilities | Deposits
Financial Instruments Owned Carrying Amount	$ 4,516,903	$ 3,960,106
Financial Instruments, Owned, at Fair Value	$ 4,523,586	$ 3,963,875
Fair Value Hierarchy Level	3	3
Financial Liabilities | Short-term Debt
Financial Instruments Owned Carrying Amount	$ 165,692	$ 312,324
Financial Instruments, Owned, at Fair Value	$ 165,692	$ 312,324
Fair Value Hierarchy Level	3	3
Financial Liabilities | Accrued interest payable
Financial Instruments Owned Carrying Amount	$ 2,594	$ 4,250
Financial Instruments, Owned, at Fair Value	$ 2,594	$ 4,250
Fair Value Hierarchy Level	3	3

X

- Definition

Represents the pure numeric value of Fair Value Hierarchy Level, as of the indicated date.

+ References

No definition available.

+ Details

Name:	gsbc_FairValueHierarchyLevel
Namespace Prefix:	gsbc_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the monetary amount of Financial Instruments Owned Carrying Amount, as of the indicated date.

+ References

No definition available.

+ Details

Name:	gsbc_FinancialInstrumentsOwnedCarryingAmount
Namespace Prefix:	gsbc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The aggregate fair value as of the balance sheet date of financial instruments and other positions owned by the entity including: (1) mortgages, mortgage-backed and asset backed securities; (2) US government and agency obligations; (3) state and municipal government obligations; (4) other sovereign government debt; (5) corporate obligations; (6) corporate equities; (7) principal investments; (8) derivative contracts; and (9) physical commodities. Includes both pledged and unpledged holdings.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 940
-SubTopic 320
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969

+ Details

Name:	us-gaap_FinancialInstrumentsOwnedAtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=gsbc_UnrecognizedFinancialInstrumentsNetOfContractualValueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=gsbc_CommitmentsToOriginateLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LetterOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=gsbc_FinancialAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_LoansReceivableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_CashAndCashEquivalentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=gsbc_MortgageLoansHeldForSale1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=gsbc_InterestReceivable1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=gsbc_InvestmentInFhlbankStockAndOtherInterestEarningAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=gsbc_FinancialLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_JuniorSubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_InvestmentTypeAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_DepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_ShortTermDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancialInstrumentAxis=gsbc_AccruedInterestPayableMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: