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v3.21.1

Vessels and other fixed assets, net (Details Narrative) $ / shares in Units, $ in Thousands |  | 5 Months Ended | 7 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jan. 14, 2019 USD ($) $ / shares shares | May 27, 2019 USD ($) | Jul. 31, 2019 USD ($) | Dec. 31, 2020 USD ($) | Dec. 17, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) | Jan. 07, 2019 $ / shares
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Number of vessels owned |  |  |  | 116 |  |  |  |
Vessels and other fixed assets, net |  |  |  | $ 2,877,119 |  | $ 2,965,527 |  |
Cash portion of the consideration |  |  |  | 72,059 |  | 347,140 | $ 328,634 |
Loss on sale of vessels |  |  |  | 0 |  | (5,493) | 0 |
Asset Impairment Charges |  |  |  |  |  | $ 3,411 | $ 17,784 |
Lease Agreements [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Number of vessels owned |  |  |  | 31 |  |  |  |
Vessels and other fixed assets, net |  |  |  | $ 738,216 |  |  |  |
Katie K [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | April 16, 2019 |  |  |  |
Debbie H [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | May 28, 2019 |  |  |  |
Star Ayesha [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | July 15, 2019 |  |  |  |
Star Janni [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | January 7, 2019 |  |  |  |
Shares Issued, Price Per Share | $ / shares |  |  |  |  |  |  |  | $ 10.41
Star Marianne [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | January 14, 2019 |  |  |  |
Shares Issued, Price Per Share | $ / shares | $ 9.66 |  |  |  |  |  |  |
Star Marianne And Star Janni [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Number of shares issued as part of the consideration | shares | shares | 999,336 |  |  |  |  |  |  |
Cash portion of the consideration | $ 31,772 |  |  |  |  |  |  |
Total acquisition cost | $ 41,837 |  |  |  |  |  |  |
Delphin Vessels [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Number of shares issued as part of the consideration | shares | shares |  |  |  |  |  | 4,503,370 |  |
Cash portion of the consideration |  | $ 80,000 |  |  |  |  |  |
Total acquisition cost |  | $ 127,532 |  |  |  |  |  |
Number of operating vessels acquired |  | 11 |  |  |  |  |  |
Delphin Vessels [Member] | CMBL [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Description of Lessee Leasing Arrangements, Capital Leases |  |  |  | seven-year |  |  |  |
Sale Leaseback Transaction, Gross Proceeds, Financing Activities |  |  | $ 91,431 |  |  |  |  |
Star Delta [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Jan. 08, 2019 |  |  |  |
Loss on sale of vessels |  |  |  | $ 5,493 |  |  |  |
Star Kappa [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Mar. 08, 2019 |  |  |  |
Star Aurora [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Mar. 06, 2019 |  |  |  |
Star Anna [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Sep. 23, 2019 |  |  |  |
Star Gamma [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Sep. 05, 2019 |  |  |  |
Star Cosmo [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Dec. 17, 2019 |  |  |  |
Star Epsilon [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Disposal date |  |  |  | Dec. 09, 2019 |  |  |  |
E.R Bayonne, E.R Buenos Aires and E.R Borneo [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Vessel delivery date |  |  |  | January 26, 2021 |  |  |  |
Number of shares issued as part of the consideration | shares | shares |  |  |  |  | 2,100,000 |  |  |
Cash portion of the consideration |  |  |  |  | $ 39,000 |  |  |
Number of operating vessels acquired |  |  |  |  | 3 |  |  |
Star Gamma And Star Anna [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Asset Impairment Charges |  |  |  |  |  | $ 3,411 |  |
First-priority mortgage [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Number of vessels owned |  |  |  | 85 |  |  |  |
Debt Instrument, Collateral Amount |  |  |  | $ 2,138,646 |  |  |  |
Second-priority mortgage [Member] |  |  |  |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |  |  |  |
Debt Instrument, Collateral Amount |  |  |  | $ 685,163 |  |  |  |

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