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Financial Instruments and Fair Value Disclosures (Schedule of other fair value measurements (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Apr. 28, 2023 USD ($) | Jan. 30, 2023 USD ($) | Dec. 31, 2022 USD ($) Vessels | Jun. 30, 2023 USD ($) | Jun. 30, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Vessel acquisitions, agreed purchase price |  | $ 23,955 |  |  |
Vessel acquisitions, paid in cash |  |  |  | $ 29,125 | $ 22,733
Vessel acquisitions, paid in common shares |  |  |  | 7,733 |
Bergen Joint Venture [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments | $ 4,519 |  |  |  |
Ownership interest percent | 25.00% |  |  |  |
Master Agreement With Sea Trade [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Vessel acquisitions, paid in common shares |  | 7,809 |  |  |
Non recurring fair value measurements |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments |  |  |  | 4,519 |
Total fair value measurements |  |  | $ 67,909 | 12,328 |
Non recurring fair value measurements | Bergen Joint Venture [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments | $ 4,519 |  |  |  |
Deconsolidation Gain Or Loss Amount | $ 844 |  |  |  |
Non recurring fair value measurements | Bergen Joint Venture [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Ownership interest percent | 25.00% |  |  |  |
Non recurring fair value measurements | Master Agreement With Sea Trade [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Vessel acquisitions, agreed purchase price |  | 31,764 |  |  |
Vessel acquisitions, paid in cash |  | 23,955 |  |  |
Vessel acquisitions, paid in common shares |  | $ 7,809 |  |  |
Non recurring fair value measurements | Long Lived Assets Held For Use |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Long-lived assets |  |  | $ 67,909 | 7,809 |
Non recurring fair value measurements | Long Lived Assets Held For Use | Master Agreement With Sea Trade [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Number Of Vessels Delivered | Vessels |  |  | 8 |  |
Vessel acquisitions, agreed purchase price |  |  | $ 263,719 |  |
Vessel acquisitions, paid in cash |  |  | 195,810 |  |
Vessel acquisitions, paid in common shares |  |  | 67,909 |  |
Non recurring fair value measurements | Level 1 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Total fair value measurements |  |  | 67,909 | 7,809 |
Non recurring fair value measurements | Level 1 [Member] | Long Lived Assets Held For Use |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Long-lived assets |  |  | $ 67,909 | 7,809 |
Non recurring fair value measurements | Level 2 [Member] |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |
Equity method investments |  |  |  | 4,519 |
Total fair value measurements |  |  |  | $ 4,519 |

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