XML 93 R29.htm IDEA: XBRL DOCUMENT v3.20.1
Note 5 - Accounts Receivable (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
   
2019
   
2018
 
Royalties
  $
4,304
    $
3,151
 
Product sales, license and other
   
11,672
     
652
 
Accounts receivable, net
 
$
15,976
   
$
3,803