XML 87 R77.htm IDEA: XBRL DOCUMENT
v3.24.3

DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of financial instruments fair value (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 USD ($) | Dec. 31, 2023 USD ($)
Subordinated debentures |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 25,774 | $ 25,774
Fair Value | $ 25,774 | $ 25,774
Hierarchy Level | 3 | 3
Subordinated notes |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 74,802 | $ 74,579
Fair Value | $ 73,688 | $ 71,625
Hierarchy Level | 2 | 2
Deposits |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 4,697,460 | $ 4,721,708
Fair Value | $ 4,694,052 | $ 4,714,624
Hierarchy Level | 3 | 3
Short-term Debt |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 518,075 | $ 323,453
Fair Value | $ 518,075 | $ 323,453
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Commitments to originate loans |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Letters of credit |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 71 | $ 78
Fair Value | $ 71 | $ 78
Hierarchy Level | 3 | 3
Unrecognized financial instruments (net of contractual value) | Lines of credit |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Hierarchy Level | 3 | 3
Interest payable |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 12,002 | $ 6,225
Fair Value | $ 12,002 | $ 6,225
Hierarchy Level | 3 | 3
Loans, net of allowance for credit losses |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 4,711,276 | $ 4,589,620
Fair Value | $ 4,548,245 | $ 4,402,314
Hierarchy Level | 3 | 3
Cash and cash equivalents |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 208,365 | $ 211,333
Fair Value | $ 208,365 | $ 211,333
Hierarchy Level | 1 | 1
Held-to-maturity securities |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 189,257 | $ 195,023
Fair Value | $ 170,042 | $ 171,193
Hierarchy Level | 2 | 2
Mortgage loans held for sale |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 9,959 | $ 5,849
Fair Value | $ 9,959 | $ 5,849
Hierarchy Level | 2 | 2
Interest Receivable |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 22,262 | $ 21,206
Fair Value | $ 22,262 | $ 21,206
Hierarchy Level | 3 | 3
Investment in FHLB stock and other assets |  |
DISCLOSURES ABOUT FAIR VALUE OF FINANCIAL INSTRUMENTS |  |
Carrying Amount | $ 17,912 | $ 26,313
Fair Value | $ 17,912 | $ 26,313
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: | duration

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 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
Name: | us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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://www.xbrl.org/2009/role/commonPracticeRef -Topic 940 -SubTopic 320 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479035/940-320-45-2 + Details
Name: | us-gaap_FinancialInstrumentsOwnedAtFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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_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_FinancialInstrumentAxis=gsbc_AccruedInterestPayableMember
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=us-gaap_HeldtomaturitySecuritiesMember
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: |