Note 3 - Prepaid Expenses and Other Current Assets - Schedule Of Prepaid Expenses and Other Current Assets (Details) - USD ($) $ in Thousands		Dec. 31, 2017	Dec. 31, 2016
Prepaid expenses		$ 6,044	$ 2,871
Government institutions & other receivables		542	369
Deferred charges	[1]		256
Foreign currency forward contracts derivatives		163
Short-term deposits		374	122
Other		7	32
Total		$ 7,130	$ 3,650

[1] Deferred charges relate to lease incentive, see Note 6b.