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Note 3 - Inventories
12 Months Ended
Dec. 31, 2015
Notes to Financial Statements  
Inventory Disclosure [Text Block]
3.
INVENTORIES:
 
Inventories are stated at the lower of cost or market and consist of the following (in thousands):
 
 
 
December 31,
 
 
 
2015
 
 
2014
 
Short-term inventories:
               
Raw materials
  $ 21,486     $ 48,005  
Work-in-process
    1,901       1,741  
Finished goods
    3,641       20,663  
Supplies
    2,447       2,370  
      29,475       72,779  
Long-term inventories:
               
Finished goods
    823       1,214  
Total inventories
  $ 30,298     $ 73,993  
 
Inventory balances are net of lower of cost or market reserves of $8.6 million and $6.6 million at December 31, 2015 and 2014, respectively.
 
Long-term inventories are recorded in other assets.