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v3.20.2

LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Non-accrual loans (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2020 | Sep. 30, 2019
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | $ 4,127 | $ 1,947
Transfer into non-accrual | 2,117 | 4,006
Loans paid down/payoffs | (409) | (1,056)
Loans return to accrual status | (594) | (193)
Loans charged off | (277) | (475)
Balance | 4,964 | 4,229
Consumer |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 137 | 186
Transfer into non-accrual | 64 | 135
Loans paid down/payoffs | (56) | (48)
Loans return to accrual status |  | (88)
Loans charged off |  | (41)
Balance | 145 | 144
Consumer | Real Estate Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 728 | 956
Transfer into non-accrual |  | 572
Loans paid down/payoffs | (206) | (755)
Loans charged off |  | (17)
Balance | 522 | 756
Indirect |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 123 | 116
Transfer into non-accrual | 434 | 467
Loans paid down/payoffs | (47) | (52)
Loans return to accrual status | (17) | (105)
Loans charged off | (277) | (390)
Balance | 216 | 36
Commercial |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance |  | 27
Transfer into non-accrual |  | 86
Loans paid down/payoffs |  | (86)
Loans charged off |  | (27)
Commercial | Real Estate Loan [Member] |  |
Financing Receivable Nonaccrual Status [Roll Forward] |  |
Balance | 3,139 | 662
Transfer into non-accrual | 1,619 | 2,746
Loans paid down/payoffs | (100) | (115)
Loans return to accrual status | (577) |
Balance | $ 4,081 | $ 3,293

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

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- 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
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Namespace Prefix: | glbz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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

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

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- 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
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
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- Details
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- Details
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Balance Type: |
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- Details
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Balance Type: |
Period Type: |