Gain On Sale Of Assets (Details) ¥ in Billions			3 Months Ended		6 Months Ended
	Apr. 24, 2015 JPY (¥)	Apr. 24, 2015 USD ($)	Jun. 30, 2015 USD ($) T	Mar. 31, 2015 USD ($) T	Jun. 30, 2015 USD ($) T
Property, Plant and Equipment [Line Items]
Gain on Sale of Other Assets			$ (4,747,000)		$ (4,679,000)
Related debt paid off	¥ 2.9	$ 24,000,000
Loss on Extinguishment of Debt			260,000	$ 95,000	$ 355,000
Handysize Vessel [Member]
Property, Plant and Equipment [Line Items]
Proceeds from sale of other assets				$ 16,400,000
Weight of vessel sold | T				36,000
Gain on Sale of Other Assets				$ 68,000
Related debt paid off				13,500,000
Loss on Extinguishment of Debt				$ 95,000
Pure Car Truck Carriers [Member]
Property, Plant and Equipment [Line Items]
Proceeds from sale of other assets			$ 13,000,000
Weight of vessel sold | T			14,930.00		14,930.00
Gain on Sale of Other Assets			$ 4,700,000
Related debt paid off			$ 10,000,000