Vessels and vessel improvements (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule Of Vessel And Vessel Improvements

	December 31, 2017			December 31, 2016
Vessel and vessel improvements at the beginning of the year	$	567,592,950		$	733,960,731
Advance paid for purchase of Singapore Eagle at December 31, 2016	1,926,886			—
Purchase of Vessels and vessel improvements	174,400,746			19,860,401
Disposal of Vessels	(15,218,633		)	(13,102,860		)
Reclassification to vessels held for sale	(9,316,095		)	(8,688,601		)
Depreciation Expense	(29,149,435		)	(35,408,859		)
Vessel impairment charge	$	—		$	(129,027,862	)
Vessels and Vessel Improvements, at December 31, 2017	$	690,236,419		$	567,592,950