Investment In Unconsolidated Entities (Summarized Equity In Net (Loss) Income Of Unconsolidated Entities) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	$ (80)	$ (75)	$ (188)	$ (345)
Oslo Bulk, AS [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(25)	(137)	(87)	(97)
Oslo Bulk Holding Pte, Ltd (formerly Tony Bulkers) [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(64)	132	(82)	(240)
Terminales Transgolfo, S.A. DE C.V. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	(39)	(70)	(67)	(8)
Saltholmen Shipping Ltd. [Member]
Schedule of Equity Method Investments [Line Items]
Total Equity in Net Loss of Unconsolidated Entities	$ 48		$ 48