Vessels (Tables)

12 Months Ended

Dec. 31, 2012

Vessels [Abstract]

Schedule of Vessel and Vessel Improvements [Table Text Block]

Vessel and vessel improvements consist of the following:
Balance vessels and vessel improvements, at December 31, 2010	$	1,509,798,249
Vessel improvements		2,991,995
Delivery of newbuild vessels		368,800,779
Disposal of vessel		(22,494,172	)
Depreciation expense		(69,715,805	)
Balance vessels and vessel improvements, at December 31, 2011		1,789,381,046
Vessel improvements		58,521
Depreciation expense		(75,131,914	)
Balance vessels and vessel improvements, at December 31, 2012	$	1,714,307,653