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Note 15 - Other Operating Loss (Details Textual) - USD ($) $ in Thousands	Oct. 20, 2020	Mar. 09, 2020	Jan. 21, 2020	Jan. 15, 2020
MT Eco Fleet [Member]
Agreement Termination Fee				$ 500
M/T Stenaweco Elegance [Member]
Agreement Termination Fee			$ 1,850
M/T Eco Palm Desert [Member]
Agreement Termination Fee		$ 1,700
M/T Eco California [Member]
Agreement Termination Fee	$ 750

X

- Definition

Represents the amount of fees for the termination of time charter agreements.

+ References

No definition available.

+ Details

Name:	tops_AgreementTerminationFee
Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tops_MTEcoFleetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tops_MTStenawecoEleganceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tops_MTEcoPalmDesertMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=tops_MTEcoCaliforniaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: