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NOTE 9 - SHARE-BASED COMPENSATION (Tables)
6 Months Ended
Jun. 30, 2020
Share-based Payment Arrangement, Noncash Expense [Abstract]  
Impact on operations of recording share-based compensation
   Three Months Ended  Six Months Ended
   June 30,
2020
  June 30,
2019
  June 30,
2020
  June 30,
2019
(in thousands)            
Cost of goods sold  $15   $10   $21   $16 
Research and development   132    103    196    166 
Selling, general and administrative   334    251    513    469 
Total share-based compensation  $481   $364   $730   $651 
Equity award activity
   Three Months Ended  Six Months Ended
   June 30,
2020
  June 30,
2019
  June 30,
2020
  June 30,
2019
Restricted Stock Units   376,200    276,700    376,200    276,700 
Stock Options   —      25,000    —      25,000 
Future equity compensation expense
   June 30,
2020
Unamortized future equity compensation expense (in thousands)  $2,731 
Remaining weighted average amortization period (in years)   2.63