XML 156 R142.htm IDEA: XBRL DOCUMENT
v3.20.4

Accumulated Other Comprehensive Income - Schedule of Amounts Reclassified from Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax | $ 5,283 | $ 48 | $ 2
Affected Line Item in the Statements of Income Member | Net realized gains on available-for-sale securities (total reclassified amount before tax) |  |  |
Unrealized gains on available-for-sale securities reclassified out of AOCI | 78 | (62) | 2
Affected Line Item in the Statements of Income Member | Amortization of realized gain on termination of cash flow hedge |  |  |
Change in fair value of cash flow hedge available-for-sale securities reclassified out of AOCI | 6,764 | 0 | 0
Affected Line Item in the Statements of Income Member | Tax Expense (Benefit) |  |  |
Income taxes on unrealized gains on available-for-sale securities reclassified out of AOCI | $ (1,559) | $ 14 | $ 0

X
- Definition Represents the monetary amount of Income taxes on unrealized gains on available-for-sale securities reclassified out of AOCI, during the indicated time period. + References No definition available. + Details
Name: | gsbc_IncomeTaxesOnUnrealizedGainsOnAvailableForSaleSecuritiesReclassifiedOutOfAoci
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amortization of realized gain on termination of cash flow hedge (total reclassification amount before tax) + References No definition available. + Details
Name: | gsbc_IncreaseDecreaseInAociCashFlowHedgeGainLossOnBeforeTax
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the monetary amount of Unrealized gains on available-for-sale securities reclassified out of AOCI, during the indicated time period. + References No definition available. + Details
Name: | gsbc_UnrealizedGainsOnAvailableForSaleSecuritiesReclassifiedOutOfAoci
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount after tax of reclassification adjustments of other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 17B -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL34724394-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32136-110900 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669686-108580 Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 55 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=121640130&loc=d3e1436-108581 + Details
Name: | us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_IncomeStatementLocationAxis=gsbc_AffectedLineItemInStatementsOfIncomeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InformationByCategoryOfDebtSecurityAxis=gsbc_NetRealizedGainsOnAvailableForSaleSecuritiesTotalReclassifiedAmountBeforeTaxMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InformationByCategoryOfDebtSecurityAxis=gsbc_AmortizationOfRealizedGainOnTerminationOfCashFlowHedgeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InformationByCategoryOfDebtSecurityAxis=gsbc_TaxExpenseBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |