Debt, ABCFL 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 Four 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	$ 27,120
ABCFL 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	$ 506
Term	10 years
Balance outstanding	$ 23,052
Purchase obligation	18,200
Minimum liquidity requirement	$ 440
Maximum ratio of debt to market value of fleet	80.00%
Percentage of vessel's market value that must not be exceeded in loan to value requirement	85.00%
Minimum term of time charter assigned as security	12 months
ABCFL Facility [Member] \| Shipbuilding Contracts for Four Newbuilding Tankers [Member]
Debt [Abstract]
Number of newbuilding vessels to be purchased \| Vessel	4
Face amount for each newbuilding vessel	$ 38,420
Aggregate face amount	$ 153,680

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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Namespace Prefix:	tops_
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Balance Type:	na
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

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

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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

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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

Name:	tops_OtherCommitmentPerContract
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

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

- Definition

Percentage of vessel's market value that must not be exceeded in loan to value requirement of the financing agreement.

+ References

No definition available.

+ Details

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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

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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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-Section 50
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Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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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- Details

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