Note 14 - Commitments and Contingencies (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Note 14 - Commitments and Contingencies (Details) [Line Items]
Operating Leases, Rent Expense	$ 2,252	$ 2,298	$ 2,389
Isreaeli Office of the Chief Scientist Royalties [Member]
Note 14 - Commitments and Contingencies (Details) [Line Items]
Loss Contingency Accrual	$ 7,880