XML 67 R53.htm IDEA: XBRL DOCUMENT
v3.19.1

Loans and Allowance for Loan Losses - Risk Ratings of Loans by Categories of Loans (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract | Dec. 31, 2016 USD ($)
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | $ 299,120 | $ 271,612 |
Non-accrual | 1,947 | 3,270 | $ 3,751
Troubled debt restructures | $ 248 | $ 263 |
Number of TDRs accounts | contract | 2 | 2 |
Non-performing TDRs |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Troubled debt restructures | $ 44 | $ 46 |
Number of TDRs accounts | contract | 1 | 1 |
Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | $ 297,224 | $ 269,217 |
Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 1,069 | 1,776 |
Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 742 | 554 |
Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 85 | 65 |
Consumer |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 13,071 | 16,112 |
Non-accrual | 186 | 185 | 403
Troubled debt restructures | $ 44 | $ 46 |
Number of TDRs accounts | contract | 1 | 1 |
Consumer | Non-performing TDRs |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Troubled debt restructures | $ 44 | $ 46 |
Number of TDRs accounts | contract | 1 | 1 |
Consumer | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | $ 12,888 | $ 16,008 |
Consumer | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total |  | 77 |
Consumer | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 183 | 3 |
Consumer | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total |  | 24 |
Residential Real estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 82,637 | 81,926 |
Non-accrual | 956 | 2,124 | 2,508
Residential Real estate | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 82,111 | 81,346 |
Residential Real estate | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 424 | 344 |
Residential Real estate | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 102 | 236 |
Indirect |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 116,698 | 85,186 |
Non-accrual | 116 | 88 | 193
Indirect | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 115,724 | 83,803 |
Indirect | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 645 | 1,027 |
Indirect | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 244 | 315 |
Indirect | Doubtful |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 85 | 41 |
Construction |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 2,317 | 3,536 |
Non-accrual |  | 318 |
Construction | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 2,317 | 3,536 |
Commercial Real Estate |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 70,113 | 73,595 |
Non-accrual | 662 | 507 | $ 647
Commercial Real Estate | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 69,900 | 73,268 |
Commercial Real Estate | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total |  | 327 |
Commercial Real Estate | Substandard |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 213 |  |
Commercial Mortgage Portfolio Segment |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | 14,284 | 11,257 |
Non-accrual | 27 | 48 |
Troubled debt restructures | $ 204 | $ 217 |
Number of TDRs accounts | contract | 1 | 1 |
Commercial Mortgage Portfolio Segment | Pass |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total | $ 14,284 | $ 11,256 |
Commercial Mortgage Portfolio Segment | Special mention |  |  |
Financing Receivable, Recorded Investment [Line Items] |  |  |
Total |  | $ 1 |

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
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 No definition available. + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + 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=84173941&loc=d3e5111-111524 + Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentPerformanceStatusAxis=us-gaap_NonperformingFinancingReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_SubstandardMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InternalCreditAssessmentAxis=us-gaap_DoubtfulMember
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_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

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

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