Financial Instruments and Fair Value Disclosures - Measured on a non-recurring basis - Advances for vessels under construction (Table)(Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Advances for vessels under construction	$ 10,845,000	$ 49,971,703
Advances for vessels under construction - Loss	96,643,651	$ 15,695,282	$ 0
Significant Other Observable Inputs (Level 2)
Advances for vessels under construction	10,845,000
Newbuildings vessels with Hull numbers DY4050, DY4052, YZJ1144, YZJ1145 and YZJ1142
Advances for vessels under construction - Loss	$ 43,878,294

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=51824106&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration