Payables to Vessel Owners - Schedule of Payables to Vessel Owners (Details) - USD ($)	Jun. 30, 2025	Dec. 31, 2024
Payables to Vessel Owners [Abstract]
Total	$ 2,950,944	$ 5,085,232

Payables to vessel owners commercial management services.

No definition available.

Name:	hmr_PayablesToVesselOwnersCommercialManagementServices
Namespace Prefix:	hmr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant