XML 23 R79.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Commitments and Contingencies - Additional Information (Detail) (USD $) | Dec. 31, 2012
--- | ---
Commitments and Contingencies [Line Items] |
Provision for financial receivable unfunded credit losses | $ 200,000

X
- Details
Name: | glbz_CommitmentsAndContingenciesLineItems
Namespace Prefix: | glbz_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Aggregate amount of credit losses from transactions realted to unfunded commitments for financial instruments + References No definition available. + Details
Name: | glbz_ProvisionForFinancialReceivableUnfundedCreditLosses
Namespace Prefix: | glbz_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant