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Income Taxes (Tables)
12 Months Ended
Dec. 31, 2019
Income Tax Disclosure [Abstract]  
Schedule of loss before taxes on income

   Year Ended December 31, 
   2019   2018   2017 
Domestic  $(15,599)  $(21,784)  $(24,728)
Foreign   55    104    130 
   $(15,544)  $(21,680)  $(24,598)
Schedule of taxes on income

   Year Ended December 31, 
   2019   2018   2017 
Current  $64   $102   $46 
Deferred   (57)   (107)   73 
                
   $7   $(5)  $119 

 

   Year Ended December 31, 
   2019   2018   2017 
Domestic  $   $   $ 
Foreign   7    (5)   119 
                
   $7   $(5)  $119 
Schedule of deferred income taxes

   December 31, 
   2019   2018 
Deferred tax assets:          
Carry forward tax losses  $35,051   $28,033 
Research and development carry forward expenses-temporary differences   1,294    1,567 
Accrual and reserves   290    241 
Right-of-use asset   433     
Total deferred tax assets   37,068    29,841 
Deferred tax liabilities:          
Right-of-use liability   (433)    
Net deferred tax assets   36,635    29,841 
Valuation allowance   (36,392)   (29,655)
           
Net deferred tax assets  $243   $186 
Schedule of net changes in total valuation allowance

   Year Ended December 31, 
   2019   2018   2017 
Balance at beginning of year  $(29,655)  $(26,311)  $(22,560)
Changes due to amendments to tax laws and exchange rate differences   (2,055)   1,393    1,806 
Adjustment previous year loss   (735)       (591)
Additions during the year   (3,947)   (4,737)   (4,966)
                
Balance at end of year  $(36,392)  $(29,655)  $(26,311)
Schedule of reconciliation between the theoretical tax expense and the actual tax expense (benefit)

   Year Ended December 31, 
   2019   2018   2017 
Loss before taxes, as reported in the consolidated statements of operations  $(15,544)  $(21,680)  $(24,598)
                
Statutory tax rate   23.0%   23.0%   24.0%
                
Theoretical tax benefits on the above amount at the Israeli statutory tax rate  $(3,575)  $(4,986)  $(5,904)
Income tax at rate other than the Israeli statutory tax rate   (1)   5    17 
Non-deductible expenses including equity based compensation expenses and other   255    631    878 
Operating losses and other temporary differences for which valuation allowance was provided   3,947    4,737    4,966 
Permanent differences   (651)   (427)    
Other   32    35    162 
                
Actual tax expense  $7   $(5)  $119