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Note 9 - Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified | 0 Months Ended | 11 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 16, 2013 | Dec. 05, 2013 | Dec. 16, 2013 | Mar. 31, 2014 | Mar. 31, 2014 Hull S407 [Member] | Feb. 06, 2014 Hull S407 [Member] | Dec. 16, 2013 Hull S407 [Member] | Mar. 31, 2014 Hull S418 [Member] | Dec. 05, 2013 Hull S418 [Member] | Mar. 31, 2014 Hull S419 [Member] | Mar. 19, 2014 Hull S419 [Member] | Mar. 31, 2014 Hull S414 [Member] | Mar. 19, 2014 Hull S414 [Member] | Mar. 31, 2014 Hull S417 [Member] | Mar. 19, 2014 Hull S417 [Member] | Mar. 31, 2014 Hull S406 [Member]
Note 9 - Commitments and Contingencies (Details) [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commitments for Vessel Aquisitions |  |  |  | $ 158,068 | $ 22,138 |  |  | $ 28,170 |  | $ 28,170 |  | $ 26,010 |  | $ 26,180 |  | $ 27,400
Commitments for Vessel Aquisitions Remainder of Fiscal Year |  |  |  | 40,240 |  |  |  |  |  |  |  |  |  |  |  |
Commitments for Vessel Aquisitions Second Year |  |  |  | 51,433 |  |  |  |  |  |  |  |  |  |  |  |
Commitments for Vessel Aquisitions Third Year |  |  |  | 66,395 |  |  |  |  |  |  |  |  |  |  |  |
Number of Vessels | 6 | 2 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Vessel Acquisition Purchase Price |  | $ 35,000 | $ 37,000 |  |  | $ 38,300 | $ 37,000 |  | $ 35,000 |  | $ 6,830 |  | $ 10,990 |  | $ 10,820 |
Vessel Acquisition Deposit Percentage |  |  | 20.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Vessel Acquisition Balance On Delivery Percentage |  |  | 80.00% |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Future Commitments to cover newbuilding vessel remaining installments to the shipyard. + References No definition available. + Details
Name: | tops_CommitmentsForVesselAquisitions
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments to cover newbuilding vessel installments to the shipyard in the remainder of the fiscal year. + References No definition available. + Details
Name: | tops_CommitmentsForVesselAquisitionsRemainderOfFiscalYear
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments to cover newbuilding vessel installments to the shipyard maturing in the second fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | tops_CommitmentsForVesselAquisitionsSecondYear
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Commitments to cover newbuilding vessel installments to the shipyard maturing in the third fiscal year following the latest fiscal year. + References No definition available. + Details
Name: | tops_CommitmentsForVesselAquisitionsThirdYear
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | tops_Note9CommitmentsandContingenciesDetailsLineItems
Namespace Prefix: | tops_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Vessels + References No definition available. + Details
Name: | tops_NumberOfVessels
Namespace Prefix: | tops_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Vessel Acquisition Balance On Delivery Percentage + References No definition available. + Details
Name: | tops_VesselAcquisitionBalanceOnDeliveryPercentage
Namespace Prefix: | tops_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Vessel Acquisition Deposit Percentage + References No definition available. + Details
Name: | tops_VesselAcquisitionDepositPercentage
Namespace Prefix: | tops_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The purchase price of a vessel acquisition. + References No definition available. + Details
Name: | tops_VesselAcquisitionPurchasePrice
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant