Note 14 - Foreign Revenues and Operations - Foreign Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Foreign Countries:
European Union	$ 8,178	$ 4,782
European Union [Member]
Foreign Countries:
European Union	2,383	128
Other Countries [Member]
Foreign Countries:
European Union		4
Foreign [Member]
Foreign Countries:
European Union	2,383	132
United States [Member]
Foreign Countries:
European Union	$ 5,795	$ 4,650