XML 46 R36.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

FAIR VALUE - Changes in the assets subject to fair value measurements (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | $ 128,727 | $ 139,427
Securities available for sale | 128,727 | 139,427
Collateralized mortgage obligations |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 13,165 | 13,661
Securities available for sale | 13,165 | 13,661
Agency mortgage-backed securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 43,710 | 46,114
Securities available for sale | 43,710 | 46,114
Municipal securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 33,115 | 33,729
Securities available for sale | 33,115 | 33,729
Corporate securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 1,292 | 1,284
Securities available for sale | 1,292 | 1,284
U.S. Treasury securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities |  | 6,945
Securities available for sale |  | 6,945
Level 1 |  |
Fair Value Measurements |  |
Assets, fair value disclosure | 525 | 7,476
Level 2 |  |
Fair Value Measurements |  |
Assets, fair value disclosure | 128,202 | 131,951
Level 3 |  |
Fair Value Measurements |  |
Assets, fair value disclosure | 395 | 398
Fair Value |  |
Fair Value Measurements |  |
Assets, fair value disclosure | 129,122 | 139,825
Recurring | Level 1 | Agency mortgage-backed securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 525 | 531
Securities available for sale | 525 | 531
Recurring | Level 1 | U.S. Treasury securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities |  | 6,945
Securities available for sale |  | 6,945
Recurring | Level 2 | Collateralized mortgage obligations |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 13,165 | 13,661
Securities available for sale | 13,165 | 13,661
Recurring | Level 2 | Agency mortgage-backed securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 43,185 | 45,583
Securities available for sale | 43,185 | 45,583
Recurring | Level 2 | Municipal securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 33,115 | 33,729
Securities available for sale | 33,115 | 33,729
Recurring | Level 2 | Corporate securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 1,292 | 1,284
Securities available for sale | 1,292 | 1,284
Recurring | Level 2 | U.S. Government agency securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 37,445 | 37,694
Securities available for sale | 37,445 | 37,694
Recurring | Fair Value | Collateralized mortgage obligations |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 13,165 | 13,661
Securities available for sale | 13,165 | 13,661
Recurring | Fair Value | Agency mortgage-backed securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 43,710 | 46,114
Securities available for sale | 43,710 | 46,114
Recurring | Fair Value | Municipal securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 33,115 | 33,729
Securities available for sale | 33,115 | 33,729
Recurring | Fair Value | Corporate securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 1,292 | 1,284
Securities available for sale | 1,292 | 1,284
Recurring | Fair Value | U.S. Government agency securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities | 37,445 | 37,694
Securities available for sale | 37,445 | 37,694
Recurring | Fair Value | U.S. Treasury securities |  |
Fair Value Measurements |  |
Available-for-sale Securities, Debt Securities |  | 6,945
Securities available for sale |  | 6,945
Nonrecurring | Level 3 |  |
Fair Value Measurements |  |
Impaired loans | 395 | 398
Nonrecurring | Fair Value |  |
Fair Value Measurements |  |
Impaired loans | $ 395 | $ 398

X
- Definition Amount of fair value of loans and leases receivable Impaired as on the balance sheet date. + References No definition available. + Details
Name: | glbz_LoansAndLeasesReceivableImpairedAtFairValue
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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_MortgageBackedSecuritiesMember
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=us-gaap_CorporateDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |