Financial Instruments and Fair Value Disclosures - Derivatives designated as hedging instruments (Table 2) (Details) - USD ($)	12 Months Ended
Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest rate swaps - Realized Loss	$ 0	$ (98,656)	$ (312,069)
Interest and finance costs (Location of Loss Transferred from Accumulated Other Comprehensive Loss in Statement of Comprehensive Loss - Effective Portion)
Interest rate swaps - Realized Loss	$ 0	$ (98,656)

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration