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Voyage and Vessel Operating Expenses (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Voyage Expenses [Abstract] |  |  |
Bunkers | $ 20 | $ 80 | $ 165
Commissions (including $705, $1,008 and $1,037 respectively, to related party) | 1,589 | 1,568 | 1,152
Total | 1,609 | 1,648 | 1,317
Commissions, related party | 1,037 | 1,008 | 705
Vessel Operating Expenses [Abstract] |  |  |
Crew wages and related costs | 11,898 | 11,881 | 11,066
Insurance | 1,670 | 1,577 | 1,026
Repairs and maintenance (including $17, $37 and $42 respectively, to related party) | 1,138 | 1,592 | 747
Spares and consumable stores | 3,538 | 3,339 | 2,530
Registration and taxes (Note 13) | 283 | 239 | 310
Total | 18,527 | 18,628 | 15,679
Repairs and maintenance, related party | $ 42 | $ 37 | $ 17

X
- Definition Amount of bunkers (or energy) consumption related to fuel stored on a ship and used as fuel for machinery operation. + References No definition available. + Details
Name: | tops_BunkersExpenses
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Commissions paid for time-charter and voyage-charter arrangements. + References No definition available. + Details
Name: | tops_Commissions
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Commissions paid to related party for time-charter and voyage-charter arrangements. + References No definition available. + Details
Name: | tops_CommissionsRelatedParty
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expenses related to registration and taxes for vessels. + References No definition available. + Details
Name: | tops_RegistrationAndTaxesExpense
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Spares and consumables costs which are used or consumed on vessels. + References No definition available. + Details
Name: | tops_SparesAndConsumableStores
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Vessel operating expenses include crew wages and related costs, insurance, repairs and maintenance, spares and consumable stores, and registration and taxes. + References No definition available. + Details
Name: | tops_VesselOperatingExpenses
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of operating expenses for vessel repair and maintenance. + References No definition available. + Details
Name: | tops_VesselRepairAndMaintenanceExpenses
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of operating expenses for vessel repair and maintenance paid to a related party. + References No definition available. + Details
Name: | tops_VesselRepairAndMaintenanceExpensesRelatedParty
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | tops_VoyageExpenseAbstract
Namespace Prefix: | tops_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Voyage expenses include port charges and other voyage expenses, bunkers (fuel costs) and commissions. + References No definition available. + Details
Name: | tops_VoyageExpenses
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_GeneralInsuranceExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of expense for salary, wage, profit sharing; incentive and equity-based compensation; and other employee benefit. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(b)(4)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_LaborAndRelatedExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OperatingExpensesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration