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v3.19.2

Transactions with Related Parties (Details) | 6 Months Ended
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Jun. 30, 2019 shares
Disclosure of transactions between related parties [Line Items] |
Number of common shares held by the controlling party | 1,252,258
Proportion of ownership interests held by the controlling party | 29.00%

X
- Definition The number of common shares held by the controlling party. + References No definition available. + Details
Name: | glbs_NumberOfSharesHeldByControllingParty
Namespace Prefix: | glbs_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The proportion of ownership interests held by the controlling party. + References No definition available. + Details
Name: | glbs_ProportionOfOwnershipInterestsHeldByControllingParty
Namespace Prefix: | glbs_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfTransactionsBetweenRelatedPartiesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration