Investment In Unconsolidated Entities (Summarized Equity In Net (Loss) Income Of Unconsolidated Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Schedule of Equity Method Investments [Line Items]
Total Equity in Net (Loss) Income of Unconsolidated Entities	$ (108)	$ (270)
Oslo Bulk, AS [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net (Loss) Income of Unconsolidated Entities	(62)	41
Oslo Bulk Holding Pte, Ltd (formerly Tony Bulkers) [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net (Loss) Income of Unconsolidated Entities	(18)	(372)
Terminales Transgolfo, S.A. DE C.V. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net (Loss) Income of Unconsolidated Entities	$ (28)	$ 61