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Note 3 - Inventories
6 Months Ended
Sep. 30, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
Note
3
-
Inventories
 
Inventories consist of the following (in thousands):
 
   
September
3
0
, 201
7
   
March 31,
201
7
 
Raw materials
  $
10,293
    $
10,815
 
Work-in-process
   
464
     
342
 
Finished goods
   
3,605
     
3,604
 
Less: reserve
   
(1,449
)    
(888
)
    $
12,913
    $
13,873