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Significant Accounting Policies - Schedule of Revenue Disaggregated by Revenue Source (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Revenues, net | $ 21,711 | $ 27,753 | $ 28,457
Revenues Derived from Spot Charters, Net [Member] |  |  |
Revenues, net | 7,022 | 8,067 | 16,990
Revenues Derived from Time Charters, Net [Member] |  |  |
Revenues, net | $ 14,689 | $ 19,686 | $ 11,467

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References No definition available. + Details
Name: | PXS_VoyageRevenues
Namespace Prefix: | PXS_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | srt_ProductOrServiceAxis=PXS_RevenuesDerivedFromSpotChartersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_ProductOrServiceAxis=PXS_RevenuesDerivedFromTimeChartersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |