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Share-Based Compensation (Tables)
9 Months Ended
Sep. 30, 2018
Sharebased Compensation Tables Abstract  
Stock-based employee compensation expense

The following table summarizes the amount of share-based compensation expense by line item in the statements of operations:

Share-based compensation expense     Three Months Ended     Nine Months Ended
      September 30,     September 30,
(in thousands)     2018     2017     2018     2017
Cost of product revenue   $   $ 14    $   $ 33 
Research and development expense     109      131      377      394 
Sales, marketing, general and administrative expense     73      179      344      600 
    $ 182    $ 324    $ 721    $ 1,027 

 

 

 

 

 

 

 

 

 

 

 

 

Options activity and positions

The following table summarizes shares, weighted-average exercise price, weighted-average remaining contractual term and aggregate intrinsic value of options outstanding and options exercisable as of September 30, 2018:

              Weighted-      
          Weighted-   Average      
          Average   Remaining     Aggregate
          Exercise   Contractual     Intrinsic
Options   Shares     Price   Term (years)     Value
Outstanding as of September 30, 2018   5,614,000    $ 2.45    6.2    $ 43,000 
                     
Exercisable as of September 30, 2018   3,100,000    $ 3.16    3.9    $ -