Note 2 - Vessels Under Construction (Details) (Subsequent Event [Member], USD $) In Millions, unless otherwise specified	1 Months Ended
	Apr. 20, 2015 ft T hp
Large Platform Supply Vessel [Member] | Simek [Member] | North Sea [Member]
Expected Delivery	Q1 2016
Length	304
Brake Horse Power	11,935
Deadweight tons	4,700
Expected Cost	$ 60
Large Platform Supply Vessel One [Member] | BAE Systems [Member] | Americas [Member]
Expected Delivery	Q3 2015
Length	286
Brake Horse Power	10,960
Deadweight tons	5,300
Expected Cost	48
Large Platform Supply Vessel Two [Member] | BAE Systems [Member] | Americas [Member]
Expected Delivery	Q1 2016
Length	286
Brake Horse Power	10,960
Deadweight tons	5,300
Expected Cost	$ 48