Note 11 - Summary of Revenues within Geographical Areas (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
UNITED STATES
Revenues		$ 73,343	$ 56,910	$ 42,165
EMEA [Member]
Revenues	[1]	44,994	35,809	25,986
Rest of World [Member]
Revenues		8,873	8,629	6,465
Revenues		$ 127,210	$ 101,348	$ 74,616

[1] Sales to customers in France accounted for $13,570 and$10,419 for the years ended December 31, 2015 and 2014. In 2013 sales in France did not exceed 10% of the Company’s revenues.