XML 51 R41.htm IDEA: XBRL DOCUMENT
v3.21.2

INVESTMENT SECURITIES - Investment Securities (Details) - Available-for-sale Securities - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2021 | Dec. 31, 2020
Available-for-sale Securities, Amortized Cost Amount | $ 430,819 | $ 384,807
Available-for-sale Securities, Gross Unrealized Gain | 22,176 | 31,338
Available-for-sale Securities, Gross Unrealized Loss | 2,155 | 1,212
Available-for-sale Securities, Fair Value | 450,840 | 414,933
Agency mortgage-backed securities |  |
Available-for-sale Securities, Amortized Cost Amount | 158,456 | 151,106
Available-for-sale Securities, Gross Unrealized Gain | 14,171 | 19,665
Available-for-sale Securities, Gross Unrealized Loss | 777 | 831
Available-for-sale Securities, Fair Value | 171,850 | 169,940
Agency collateralized mortgage obligations |  |
Available-for-sale Securities, Amortized Cost Amount | 214,533 | 168,472
Available-for-sale Securities, Gross Unrealized Gain | 5,155 | 8,524
Available-for-sale Securities, Gross Unrealized Loss | 1,314 | 375
Available-for-sale Securities, Fair Value | 218,374 | 176,621
States and political subdivisions securities |  |
Available-for-sale Securities, Amortized Cost Amount | 39,177 | 45,196
Available-for-sale Securities, Gross Unrealized Gain | 1,883 | 2,135
Available-for-sale Securities, Gross Unrealized Loss | 64 | 6
Available-for-sale Securities, Fair Value | 40,996 | 47,325
Small Business Administration securities |  |
Available-for-sale Securities, Amortized Cost Amount | 18,653 | 20,033
Available-for-sale Securities, Gross Unrealized Gain | 967 | 1,014
Available-for-sale Securities, Fair Value | $ 19,620 | $ 21,047

X
- Definition Represents the monetary amount of Available for Sale Securities Fair Value, as of the indicated date. + References No definition available. + Details
Name: | gsbc_AvailableForSaleSecuritiesFairValue
Namespace Prefix: | gsbc_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
Name: | us-gaap_AvailableForSaleSecuritiesAmortizedCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of unrealized gain before deducting unrealized loss on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesGrossUnrealizedGains
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of unrealized loss before deducting unrealized gain on investments in available-for-sale securities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 + Details
Name: | us-gaap_AvailableForSaleSecuritiesGrossUnrealizedLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CollateralizedMortgageObligationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USStatesAndPoliticalSubdivisionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=gsbc_SmallBusinessAdministrationSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |