Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Summary Of Significant Accounting Policies [Abstract]

Inventory by Major Classes

(All Amounts in Thousands)
Inventory Classes		2015		2014
Spare Parts Inventory	$	1,930	$	3,253
Fuel Inventory		2,854		3,967
Warehouse Inventory		2,251		2,540
Total	$	7,035	$	9,760

Estimated Useful Lives of Vessels, Property and Other Equipment

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