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Other Assets
6 Months Ended
Sep. 30, 2011
Other Assets Noncurrent Disclosure Abstract 
Schedule Of Other Assets Noncurrent Text Block
4. Other Assets
       
 Other assets consist of the following (in thousands):
       
  September 30, March 31,
  2011 2011
       
  (unaudited)
 Available-for-sale investment securities$ 859 $ 834
 Long term equity investments  5,087   4,860
 Advance to vendors and other items  1,609   2,283
  Total$ 7,555 $ 7,977