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NOTE 9 - SHARE-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2018
Note 9 - Share-based Compensation  
Impact on operations of recording share-based compensation
     Three Months Ended    Six Months Ended
    Jun. 30,
2018
  Jun. 30,
2017
  Jun. 30,
2018
  Jun. 30,
2017
 (in thousands)                
Cost of goods sold   $11   $8   $15   $10
Research and development   107   63   149   88
Selling, general and administrative   355   199   486   269
Total share-based compensation   $473   $270   $650   $367
                 
Equity award activity
     Three Months Ended    Six Months Ended
    Jun. 30,
2018
  Jun. 30,
2017
  Jun. 30,
2018
  Jun. 30,
2017
                 
Restricted Stock   204,856   223,600   205,856   235,600
Future equity compensation expense
    Jun. 30,
2018
     
Unamortized future equity compensation expense (in thousands)   $3,373
Remaining weighted average amortization period (in years)   3.04