Cash and cash equivalents and Restricted cash (Details Narrative) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Cash and cash equivalents [abstract]
Cash and cash equivalents at fair value	$ 70,765	$ 74,202
Amount pledged as collaterals	3,605	3,620
Restricted cash at fair value	3,605	3,620
Non current restricted cash	2,905	3,530
Current restricted cash	$ 700	$ 90

Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

No definition available.

Name:	glbs_CashAndCashEquivalentsFairValueDisclosure
Namespace Prefix:	glbs_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant