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Note 5 - Inventories
12 Months Ended
Dec. 31, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
5
.
INVENTORIES:
 
Inventories consist of the following (in thousands):
 
   
December 31
,
 
   
201
7
   
201
6
 
Short-term inventories
:
               
Raw material
s
  $
13,700
    $
15,411
 
Work-in-proces
s
   
1,268
     
1,235
 
Finished good
s
   
464
     
40
 
Supplie
s
   
1,623
     
1,959
 
Total short-term inventorie
s
   
17,055
     
18,645
 
                 
Long-term inventories
:
               
Finished good
s
   
820
     
773
 
Total inventorie
s
  $
17,875
    $
19,418
 
 
Long-term inventories are recorded in
Other assets.