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Note 5 - Inventories
12 Months Ended
Dec. 31, 2018
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5
.
INVENTORIES:
 
Inventories consist of the following (in thousands):
 
   
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
 
 
Noncurrent inventories are recorded in Other assets.