XML 49 R35.htm IDEA: XBRL DOCUMENT v3.19.1
Note 5 - Inventories (Tables)
12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule Of Inventory Current And Non Current [Table Text Block]
   
December 31,
 
   
2018
   
2017
 
Current inventories:
               
Raw materials
  $
34,426
    $
13,700
 
Work-in-process
   
2,368
     
1,268
 
Finished goods
   
1,075
     
464
 
Supplies
   
1,507
     
1,623
 
Total current inventories
   
39,376
     
17,055
 
                 
Noncurrent inventories:
               
Finished goods
   
65
     
820
 
Total inventories
  $
39,441
    $
17,875