XML 42 R32.htm IDEA: XBRL DOCUMENT
v3.21.1

Loans and Allowance - Non-accrual loans (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | $ 4,512 | $ 4,127
Transfer into non-accrual | 643 | 177
Loans paid down/payoffs | (598) | (74)
Loans return to accrual status | (33) | (17)
Loans charged off | (82) | (125)
Balance | 4,442 | 4,088
Real Estate Loan |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 4,299 |
Balance | 4,303 |
Consumer Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 213 |
Single-family residential | Real Estate Loan |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 270 | 790
Loans paid down/payoffs | (133) | (11)
Balance | 137 | 779
Multifamily | Real Estate Loan |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance |  | 24
Loans paid down/payoffs |  | (4)
Balance |  | 20
Commercial | Real Estate Loan |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 4,029 | 3,139
Transfer into non-accrual | 574 |
Loans paid down/payoffs | (437) | (32)
Balance | 4,166 | 3,107
Commercial | Consumer Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 139 |
Consumer | Consumer Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 34 | 51
Loans paid down/payoffs | (1) | (5)
Loans return to accrual status | (33) |
Balance |  | 46
Automobile | Consumer Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 179 | 123
Transfer into non-accrual | 69 | 177
Loans paid down/payoffs | (27) | (22)
Loans return to accrual status |  | (17)
Loans charged off | (82) | (125)
Balance | $ 139 | $ 136

X
- Definition Amount of nonaccrual direct write-downs of financing receivables charged against the allowance. + References No definition available. + Details
Name: | glbz_FinancingReceivableAllowanceForCreditLossesNonaccrualWriteDowns
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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: | glbz_FinancingReceivableNonaccrualStatusRollForward
Namespace Prefix: | glbz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents loans returned to accrual status. + References No definition available. + Details
Name: | glbz_LoansReturnedToAccrualStatus
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents nonaccrual loan paid off. + References No definition available. + Details
Name: | glbz_NonaccrualLoanPaidOff
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents amount transfers into non-accrual during the period. + References No definition available. + Details
Name: | glbz_TransfersIntoNon-Accrual
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of financing receivable on nonaccrual status. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121611835&loc=d3e5111-111524 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 16 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121599337&loc=SL82919258-210447 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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

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

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

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

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

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