XML 48 R34.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 13 - Geographic Sales Information (Tables)
12 Months Ended
Dec. 31, 2017
Notes Tables  
Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]
   
Year ended December 31,
 
   
2017
   
2016
   
201
5
 
United States
  $
24,569
    $
31,838
    $
39,563
 
All other countries
   
17,235
     
16,799
     
18,233
 
Total
  $
41,804
    $
48,637
    $
57,796