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Note 6 Inventories
9 Months Ended
Dec. 31, 2014
Inventory Net [Abstract]  
Inventory Disclosure [Text Block]

6. Inventories

Inventories consist of the following (in thousands):

  December 31, March 31,
  2014 2014
       
  (unaudited)
 Raw materials$ 21,577 $ 19,957
 Work in process  40,181   44,165
 Finished goods  27,382   28,906
  Total$ 89,140 $ 93,028