Note 2 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) shares	Dec. 31, 2015 USD ($) shares	Dec. 31, 2014 USD ($) shares
Interest Costs Capitalized	$ 575	$ 534	$ 128
Goodwill, Impairment Loss	0	8,542	0
Foreign Currency Transaction Gain (Loss), Realized	$ 306	$ (605)	$ 186
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares	558,499	342,961	940,038
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Number of Major Customers	1	1
Concentration Risk, Percentage	43.00%	51.00%
Maximum [Member]
Cash with European Union Banks	$ 10,000