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Fair Value (Tables)
3 Months Ended
Mar. 31, 2019
Fair Value Disclosures [Abstract]  
Financial Assets and Liabilities Measured at Fair Value
(in thousands) Level 1   Level 2   Level 3 Total  
Assets        
  Short-term investments $9,595  $      -      $         -    $9,595 
  Marketable equity securities 1,259        -      -    1,259

 

 

(in thousands) Level 1 Level 2 Level 3 Total
Assets        
  Short-term investments $10,223  $   -    $  -    $10,223 
  Marketable equity securities $  1,585  $   -    $  -    $  1,585