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Fair value measurements - Unaudited Condensed Consolidated Statement of Operations (Table) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Gain/(loss) on derivative financial instruments, net
Unrealized gain/(loss) from the Goldman Sachs Swaps after de-designation of accounting hedging relationship (April 1, 2015)	$ 1,642	$ (1,930)
Realized gain/(loss) from the Goldman Sachs Swaps after de-designation of accounting hedging relationship (April 1, 2015)	(1,542)	(2,709)
Write-off of unrealized losses related to forecasted transactions which are no longer considered probable reclassified from other comprehensive income/(loss)	0	(42)
Total Gain/(loss) on derivative financial instruments, net	100	(4,681)
Interest and finance costs
Reclassification adjustments of interest rate swap loss transferred to Interest and finance costs from Other comprehensive income/(loss) (Note 8)	(473)	(667)
Total Gain/(loss) recognized	(473)	(667)
Gain/(loss) on forward freight agreements
Total Gain/(loss) recognized	(541)	283
Forward freight agreements
Gain/(loss) on forward freight agreements
Realized gain/(loss) on forward freight agreements	(500)	283
Unrealized gain/(loss) on forward freight agreements	(41)	0
Total Gain/(loss) recognized	$ (541)	$ 283

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- Definition

The aggregate net effect in earnings due to derivatives.

+ References

No definition available.

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Amount of gain (loss) included in earnings for the period from the settlement of interest rate derivatives not designated as hedging instruments.

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The realized gain / (loss) of forward freight agreements, held at each balance sheet date, that was included in earnings for the period.

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The net change in the difference between the fair value, of forward freight agreements, held at each balance sheet date, that was included in earnings for the period.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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Aggregate net gain (loss) on all derivative instruments recognized in earnings during the period, before tax effects.

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-Publisher FASB
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The amount of net gain (loss) reclassified into earnings in the period when cash flow hedge is discontinued because it is probable that the original forecasted transactions will not occur by the end of the original period or an additional two month time period.

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Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments.

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The amount of net gains or losses on interest rate cash flow hedges reclassified during the period to earnings from accumulated other comprehensive income upon the hedged transaction affecting earnings.

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