Debt, CIBFL Facility (Details) $ in Thousands	6 Months Ended
Jun. 30, 2026 USD ($) Vessel	Dec. 31, 2025 USD ($)
Debt [Abstract]
Balance outstanding	$ 260,974	$ 216,612
Shipbuilding Contracts for Five Newbuilding Tankers [Member]
Debt [Abstract]
Percentage of constructions costs to be funded by the Company	15.00%
Contractual commitment for each shipbuilding contract	$ 45,200
First installment payable per vessel	6,780
Aggregate first installment payable	$ 33,900
CIBFL Facility [Member]
Debt [Abstract]
Percentage of installments payable to be financed	85.00%
Basis spread on variable rate	1.80%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]	tops:TermSecuredOvernightFinancingRateMember
Frequency of periodic payment	quarterly
Installment payment	$ 511
Term	10 years
Balance outstanding	$ 28,815
Purchase obligation	18,000
Minimum liquidity requirement	$ 440
Maximum ratio of debt to market value of fleet	80.00%
Minimum term of time charter assigned as security	12 months
CIBFL Facility [Member] \| SOFR [Member]
Debt [Abstract]
Variable rate	3.66%
CIBFL Facility [Member] \| EURIBOR [Member]
Debt [Abstract]
Variable rate	2.25%
CIBFL Facility [Member] \| Minimum [Member]
Debt [Abstract]
Percentage of outstanding capital balance	118.00%
CIBFL Facility [Member] \| Shipbuilding Contracts for Five Newbuilding Tankers [Member]
Debt [Abstract]
Number of newbuilding vessels to be purchased \| Vessel	5
Face amount for each newbuilding vessel	$ 38,420
Aggregate face amount	$ 192,100

The maximum ratio of total net debt to the aggregate market value of the Company's fleet, current or future.

No definition available.

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Period Type:	duration

- Definition

Minimum term of time charter assigned as security under the debt instrument, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	tops_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

The value of the interest rate for the reference rate used for the variable rate of the debt agreement as of the end of the reporting period.

+ References

No definition available.

+ Details

Name:	tops_DebtInstrumentVariableInterestRate
Namespace Prefix:	tops_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face amount of financial liability at time of sale and leaseback agreement.

+ References

No definition available.

+ Details

Name:	tops_FinancialLiabilityFaceAmount
Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Face amount of financial liability for each shipbuilding tanker at time of sale and leaseback agreement.

+ References

No definition available.

+ Details

Name:	tops_FinancialLiabilityFaceAmountForNewbuildingVessel
Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Aggregate first installment payable a related party.

+ References

No definition available.

+ Details

Name:	tops_FirstInstallmentPayable
Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

First installment payment per vessel to a related party.

+ References

No definition available.

+ Details

Name:	tops_FirstInstallmentPayablePerVessel
Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Number of newbuilding vessels to be purchased.

+ References

No definition available.

+ Details

Name:	tops_NumberOfNewbuildingVesselsToBePurchased
Namespace Prefix:	tops_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Minimum amount of other commitment under each shipbuilding contract.

+ References

No definition available.

+ Details

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Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage of construction costs for the Newbuilding Tankers to be financed under financing facilities.

+ References

No definition available.

+ Details

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Namespace Prefix:	tops_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of construction costs for the Newbuilding Tankers to be funded by the Company.

+ References

No definition available.

+ Details

Name:	tops_PercentageOfConstructionCostsToBeFunded
Namespace Prefix:	tops_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of outstanding capital balance under the asset cover requirement of the financing agreement.

+ References

No definition available.

+ Details

Name:	tops_PercentageOfOutstandingCapitalBalance
Namespace Prefix:	tops_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of purchase obligation at the expiration of the lease in a sale and leaseback transaction.

+ References

No definition available.

+ Details

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Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The minimum liquidity requirement under the sale and leaseback agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	tops_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the frequency of periodic payments (monthly, quarterly, annual).

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the required periodic payments applied to principal.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Indicates type of variable interest rate on debt instrument.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
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Period Type:	duration

- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

+ References

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_SecuredOvernightFinancingRateSofrMember
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- Details

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