The amount of daily income relating to fees and commissions.

No definition available.

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Namespace Prefix:	glbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of monthly expense recognised on rental activities.

+ References

No definition available.

+ Details

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Namespace Prefix:	glbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The vessel's capacity in deadweight tonnage ("dwt").

+ References

No definition available.

+ Details

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Namespace Prefix:	glbs_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

The date of the vessel delivery to the Company.

+ References

No definition available.

+ Details

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Namespace Prefix:	glbs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The type of vessel.

+ References

No definition available.

+ Details

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Namespace Prefix:	glbs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The year that the vessel was built.

+ References

No definition available.

+ Details

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Namespace Prefix:	glbs_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate cash flows used in obtaining control of subsidiaries or other businesses, classified as investing activities. [Refer: Subsidiaries [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 7
-IssueDate 2021-01-01
-Paragraph 39
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2021-en-r&anchor=para_39&doctype=Standard
-URIDate 2021-03-24

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	ifrs-full_ClassesOfPropertyPlantAndEquipmentAxis=glbs_PeakLibertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	ifrs-full_CategoriesOfRelatedPartiesAxis=glbs_EolosShipmanagementSAMember
Namespace Prefix:
Data Type:	na
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Period Type:

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
Data Type:	na
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Events after the reporting date (Details Narrative)	6 Months Ended			7 Months Ended		9 Months Ended
Events after the reporting date (Details Narrative)	Jul. 15, 2021 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Aug. 05, 2021 EUR (€)	Jul. 20, 2021 USD ($)	Sep. 22, 2021 USD ($)
Disclosure of non-adjusting events after reporting period [line items]
Purchase price		$ 27,000,000	$ (0)
Power Globe [member]
Disclosure of non-adjusting events after reporting period [line items]
Vessel year built					2011
Vessel type					Kamsarmax
Purchase price					$ 16,200,000
Vessel Capacity					80,655
Peak Liberty [member]
Disclosure of non-adjusting events after reporting period [line items]
Vessel year built						2015
Vessel type						Kamsarmax
Purchase price						$ 28,400,000
Vessel Capacity						81,837
Expected delivery date						4th quarter of 2021
Eolos Shipmanagement S.A. [member]
Disclosure of non-adjusting events after reporting period [line items]
Daily fee of consultancy	$ 1
New Rental Agreement with Cyberonica S.A. [member] \| New office building [member]
Disclosure of non-adjusting events after reporting period [line items]
Monthly Rental Expense \| €				€ 26,000