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Note 14 - Subsequent Events (Details Textual) - Subsequent Event [Member] - USD ($) | Aug. 09, 2019 | Jul. 25, 2019 | Jul. 17, 2019
--- | --- | --- | ---
Series E Preferred Stock [Member] |  |  |
Stock Redeemed or Called During Period, Shares | 1,739 | 3,043 |
MT Stenaweco Excellence Sale Leaseback [Member] |  |  |
Sale Leaseback Transaction, Lease Term |  |  | 10 years
Sale Leaseback Transaction, Buyback Period, Minimum Term |  |  | 10 years
Sale Leaseback Transaction, Buy Back, Amount |  |  | $ 1
Proceeds from Sale of Property, Plant, and Equipment, Total |  |  | $ 25,600,000
MT Stenaweco Excellence Sale Leaseback [Member] | London Interbank Offered Rate (LIBOR) [Member] |  |  |
Sale Leaseback Transaction, Interest Rate |  |  | 3.90%

X
- Definition Represents the amount of the buy back option associated with a sale leaseback transaction. + References No definition available. + Details
Name: | tops_SaleLeasebackTransactionBuyBackAmount
Namespace Prefix: | tops_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents sale leaseback transaction buyback period minimum term. + References No definition available. + Details
Name: | tops_SaleLeasebackTransactionBuybackPeriodMinimumTerm
Namespace Prefix: | tops_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Percentage rate of interest for the sale leaseback transaction. + References No definition available. + Details
Name: | tops_SaleLeasebackTransactionInterestRate
Namespace Prefix: | tops_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Term of the sale leaseback arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | tops_SaleLeasebackTransactionLeaseTerm
Namespace Prefix: | tops_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of stock bought back by the entity at the exercise price or redemption price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

X
- Details
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Period Type: |

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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |