XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.24.1.1.u2

LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Allowance by Loan Segment (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | $ 2,157,000 | $ 2,162,000 | $ 2,162,000
Charged off | (314,000) | (8,000) | (203,000)
Recoveries | 23,000 |  | 102,000
(Release) provision for credit losses | 169,000 |  | 96,000
Balance, end of year | 2,035,000 | 2,157,000 | 2,157,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 21,000 |  | 200,000
Individually evaluated for impairment, Related loan balance | 176,000 |  | 329,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 2,014,000 |  | 1,957,000
Collectively evaluated for impairment, Related loan balance | 177,774,000 |  | 175,978,000
Real Estate Loan |  |  |
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 21,000 |  | 21,000
Real Estate Loan | Construction and Land |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 31,000 | 44,000 | 44,000
(Release) provision for credit losses | 6,000 |  | (13,000)
Balance, end of year | 37,000 |  | 31,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 37,000 |  | 31,000
Collectively evaluated for impairment, Related loan balance | 6,106,000 |  | 4,636,000
Real Estate Loan | Farmland |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 18,000 | 20,000 | 20,000
(Release) provision for credit losses | (1,000) |  | (2,000)
Balance, end of year | 17,000 |  | 18,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 17,000 |  | 18,000
Collectively evaluated for impairment, Related loan balance | 322,000 |  | 325,000
Real Estate Loan | Single-family Residential |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 1,290,000 | 1,230,000 | 1,230,000
(Release) provision for credit losses | 15,000 |  | 60,000
Balance, end of year | 1,305,000 |  | 1,290,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance | 21,000 |  | 21,000
Individually evaluated for impairment, Related loan balance | 35,000 |  | 30,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 1,284,000 |  | 1,269,000
Collectively evaluated for impairment, Related loan balance | 86,033,000 |  | 86,857,000
Real Estate Loan | Multi-family |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 96,000 | 103,000 | 103,000
(Release) provision for credit losses | (1,000) |  | (7,000)
Balance, end of year | 95,000 |  | 96,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 95,000 |  | 96,000
Collectively evaluated for impairment, Related loan balance | 5,130,000 |  | 5,165,000
Real Estate Loan | Commercial |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 190,000 | 221,000 | 221,000
Charged off | (299,000) |  |
(Release) provision for credit losses | 305,000 |  | (31,000)
Balance, end of year | 196,000 |  | 190,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 196,000 |  | 190,000
Collectively evaluated for impairment, Related loan balance | 39,084,000 |  | 39,217,000
Commercial and Industrial |  |  |
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance |  |  | 179,000
Commercial and Industrial | Commercial and Industrial |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 304,000 | 174,000 | 174,000
Charged off | (299,000) |  |
(Release) provision for credit losses | (145,000) |  | 130,000
Balance, end of year | 159,000 |  | 304,000
Individually evaluated for impairment: |  |  |
Individually evaluated for impairment, Balance in allowance |  |  | 179,000
Individually evaluated for impairment, Related loan balance | 141,000 |  | 299,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 159,000 |  | 125,000
Collectively evaluated for impairment, Related loan balance | 13,141,000 |  | 10,551,000
Commercial and Industrial | SBA guaranty |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 21,000 | 22,000 | 22,000
(Release) provision for credit losses |  |  | (1,000)
Balance, end of year | 21,000 |  | 21,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 21,000 |  | 21,000
Collectively evaluated for impairment, Related loan balance | 5,872,000 |  | 5,924,000
Consumer Loans | Consumer |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 30,000 | 23,000 | 23,000
Charged off | (13,000) |  | (79,000)
Recoveries |  |  | 1,000
(Release) provision for credit losses | 20,000 |  | 85,000
Balance, end of year | 37,000 |  | 30,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 37,000 |  | 30,000
Collectively evaluated for impairment, Related loan balance | 2,399,000 |  | 2,039,000
Consumer Loans | Automobile |  |  |
Financing Receivable, Allowance for Credit Losses |  |  |
Balance, beginning of year | 177,000 | $ 325,000 | 325,000
Charged off | (2,000) |  | (124,000)
Recoveries | 23,000 |  | 101,000
(Release) provision for credit losses | (30,000) |  | (125,000)
Balance, end of year | 168,000 |  | 177,000
Collectively evaluated for impairment: |  |  |
Collectively evaluated for impairment, Balance in allowance | 168,000 |  | 177,000
Collectively evaluated for impairment, Related loan balance | $ 19,687,000 |  | $ 21,264,000

X
- References No definition available. + Details
Name: | glbz_CollectivelyEvaluatedForImpairmentAbstract
Namespace Prefix: | glbz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | glbz_IndividuallyEvaluatedForImpairmentAbstract
Namespace Prefix: | glbz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (g) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of increase in allowance for credit loss on financing receivable from recovery. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(4) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of writeoff of financing receivable, charged against allowance for credit loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 79 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479294/326-20-55-79 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-6 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c)(3) -SubTopic 10 -Topic 310 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11B + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L(5)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, excluding accrued interest, of credit loss expense (reversal of expense) on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableExcludingAccruedInterestCreditLossExpenseReversal
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481962/310-10-50-11C Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 4 -Subparagraph (SAB Topic 6.L(5)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480418/310-10-S99-4 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_RealEstateLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=glbz_ConstructionAndLandDevelopmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=glbz_FarmlandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_SingleFamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=srt_MultifamilyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialAndIndustrialSectorMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=glbz_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=glbz_SbaGuarantyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_AutomobileLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |