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Note 3 - Inventories
12 Months Ended
Mar. 31, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
Note
3.
Inventories
 
Inventories consist of the following (in thousands):
 
 
 
March 31,
 
 
 
201
7
 
 
201
6
 
Raw materials
  $
10,815
    $
9,433
 
Work-in-process
   
342
     
337
 
Finished goods
   
3,604
     
4,941
 
Less reserve
   
(888
)    
(694
)
    $
13,873
    $
14,017