Investment In Unconsolidated Entities (Summarized Equity In Net Loss Of Unconsolidated Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	$ (176)	$ (360)	$ (364)	$ (705)
Oslo Bulk, AS [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(55)	(193)	(142)	(290)
Oslo Bulk Holding Pte, Ltd (formerly Tony Bulkers) [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(318)	(122)	(400)	(363)
Terminales Transgolfo, S.A. DE C.V. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(81)	(45)	(148)	(52)
Brattholmen Shipping Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	30		30
Saltholmen Shipping Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	$ 248		$ 296