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Fair Value Measurements and Hedging - Fair value on a recurring basis - Quoted Prices in Active Markets (Table) (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivatives, current liability portion | $ 3,711 | $ 1,939
Derivatives, non-current liability portion | 603 | 2,265
Fair Value, Inputs, Level 1 [Member] | Not Designated as Hedging Instrument [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Total | 1,769 | 212
Fair Value, Inputs, Level 1 [Member] | Not Designated as Hedging Instrument [Member] | Forward Freight Agreements [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivatives, current liability portion | 1,701 | 212
Derivatives, non-current liability portion | $ 68 | $ (0)

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