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Equity (Tables)
12 Months Ended
Dec. 31, 2019
Equity [Abstract]  
Summary of employee option activity under the 2007 Plan

  

Number
of options

   Weighted
average
exercise
price
   Weighted
average
remaining
contractual
term
(in years)
   Aggregate
intrinsic
value
 
                 
Outstanding at January 1, 2019   220,767   $3.83    3.81   $1,684 
Granted   -   $-           
Exercised   (78,500)  $2.47           
Forfeited   (22,500)  $-           
                     
Outstanding at December 31, 2019   119,767   $2.58    1.37   $1,171 
                     
Exercisable at December 31, 2019   119,767   $2.58    1.37   $1,171 
Schedule of options outstanding

Exercise price  Options
outstanding
   Weighted
average
remaining
contractual life
(years)
   Weighted
average
exercise price
   Options
exercisable
  

Weighted
average
exercise price of exercisable options

 
In $                    
1.01-2   40,000    0.30   $1.38    40,000   $1.38 
3.01-4   73,517    1.77   $3.02    73,517   $3.02 
5.01-6   6,250    3.61   $5.02    6,250   $5.02 
                          
    119,767    1.37   $2.58    119,767   $2.58 
Schedule of accumulated other comprehensive income (loss)
   December 31, 
   2019   2018   2017 
             
Accumulated realized and unrealized gain (loss) on available-for-sale securities, net  $1   $(94)  $(58)
Accumulated foreign currency translation adjustments   (351)   (6,057)   115 
Accumulated unrealized gain on derivative instruments, net   26    26    26 
                
Total other comprehensive income (loss)  $(324)  $(6,125)  $83