Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary Of Significant Accounting Policies [Abstract]

Inventory By Class

(All Amounts in Thousands)	For the Years Ended December 31,
Inventory Classes		2014		2013
Spare Parts Inventory	$	3,253	$	3,968
Fuel Inventory		3,967		4,663
Warehouse Inventory		2,540		2,691
	$	9,760	$	11,322

Estimated Useful Lives Of Property And Equipment

Jones Act
	1	Coal Carrier	15
	2	Bulk Carriers	25
	1	Harbor Tug	20
	3	ATB Barge and Tug Units	9-30
	1	ITB Barge and Tug Unit	9-30
Pure Car Truck Carriers
	5	Pure Car/Truck Carriers	20-25
Rail Ferry
	2	Special Purpose Vessels	25
		Building	15-25
Dry Bulk Carriers
	5	Bulk Carriers	25
Specialty Contracts
	1	Special Purpose Vessel	25
Other
		Leasehold Improvements	10-20
		Other Equipment	3-12
		Furniture and Equipment	3-10