Loans And Leases Receivable Consumer And Indirect Loans

No definition available.

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Namespace Prefix:	glbz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents loans and leases receivable consumer and indirect loans

+ References

No definition available.

+ Details

Name:	glbz_LoansAndLeasesReceivableConsumerAndIndirectLoansAllowance
Namespace Prefix:	glbz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents loans and leases receivable troubled debt restructured.

+ References

No definition available.

+ Details

Name:	glbz_LoansAndLeasesReceivableTroubledDebtRestructuring
Namespace Prefix:	glbz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents loans and leases receivable troubled debt restructured

+ References

No definition available.

+ Details

Name:	glbz_LoansAndLeasesReceivableTroubledDebtRestructuringAllowance
Namespace Prefix:	glbz_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Represents number of borrowers consumer and indirect loans.

+ References

No definition available.

+ Details

Name:	glbz_NumberOfBorrowersConsumerAndIndirectLoans
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Represents number of loans.

+ References

No definition available.

+ Details

Name:	glbz_NumberOfLoans
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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

A valuation allowance for financing receivables that are expected to be uncollectible.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

Name:	us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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_FinancingReceivableImpairedLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Recorded Investment in financing receivables that are past due at 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 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

+ Details

Name:	us-gaap_FinancingReceivableRecordedInvestmentPastDue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of allowance for credit losses related to recorded investment.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=d3e5212-111524

+ Details

Name:	us-gaap_ImpairedFinancingReceivableRelatedAllowance
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialPortfolioSegmentMember
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- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
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LOANS RECEIVABLE AND ALLOWANCE FOR LOAN LOSSES - Summary of recorded investment amount and related allowance for losses of impaired loans (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) borrower loan	Mar. 31, 2019 USD ($) loan	Mar. 31, 2018 borrower	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Financing Receivable, Impaired [Line Items]
Allowance for loan loss	$ 2,605,000	$ 2,605,000		$ 2,541,000	$ 2,589,000
Loans outstanding	$ 800,000	$ 800,000
Number of borrowers	19	1	7
Amount of troubled debt restructured loans, outstanding	$ 42,831	$ 42,831
Amount of troubled debt restructured loans, specific reserve	16,371	16,371
Specific Reserve	255,000	255,000
30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	4,002,000	4,002,000		1,726,000
30-89 Days Past Due \| Substandard
Financing Receivable, Impaired [Line Items]
Loans outstanding	1,000,000	1,000,000
Consumer
Financing Receivable, Impaired [Line Items]
Allowance for loan loss	$ 186,000	$ 186,000		161,000	214,000
Number of loans \| loan	3	3
Number of borrowers \| borrower	3
Amount of consumer and indirect loans, outstanding	$ 174,870	$ 174,870
Amount of consumer and indirect loans, specific reserves	51,920	51,920
Consumer \| 30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	152,000	152,000		216,000
Commercial
Financing Receivable, Impaired [Line Items]
Allowance for loan loss	249,000	249,000		241,000	237,000
Specific Reserve	203,000	203,000
Commercial \| 30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding				86,000
Commercial \| 30-89 Days Past Due \| Substandard
Financing Receivable, Impaired [Line Items]
Loans outstanding	202,000	202,000
Commercial Real Estate
Financing Receivable, Impaired [Line Items]
Allowance for loan loss	324,000	324,000		$ 283,000	$ 291,000
Commercial Real Estate \| 30-89 Days Past Due
Financing Receivable, Impaired [Line Items]
Loans outstanding	2,830,000	2,830,000
Commercial Real Estate \| 30-89 Days Past Due \| Substandard
Financing Receivable, Impaired [Line Items]
Loans outstanding	$ 583,000	$ 583,000