Note 2 - Vessels Disposed (Details) (North Truck [Member], Large Platform Supply Vessel [Member], North Sea [Member])	3 Months Ended
	Mar. 31, 2015 T hp ft
North Truck [Member] | Large Platform Supply Vessel [Member] | North Sea [Member]
Year Built	1,983
Length	265
Brake Horse Power	6,120	[1]
Deadweight tons	3,370	[2]
Month Disposed	Jan-15

[1] BHP - Brake Horsepower

[2] DWT - Deadweight Tons