Note 9 - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Carry forward losses and credits	$ 9,220	$ 7,947
Deferred revenues	12,223	9,146
Accrued payroll, commissions, vacation	1,247	610
Allowance for doubtful accounts	88	64
Accrued severance pay	328	443
Other	2,393	731
Net deferred tax assets before valuation allowance	25,499	18,941
Valuation allowance	$ (25,499)	$ (18,941)
Net deferred tax assets