Quarterly report pursuant to Section 13 or 15(d)

Short-term Investments (Tables)

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Short-term Investments (Tables)
6 Months Ended
Sep. 30, 2012
Short-term Investments [Abstract]  
Short-term investments
                 
(in thousands)   September 30,
2012
    March 31,
2012
 

Certificates of deposit

  $ 4,904     $ 6,061  

Held-to-maturity, pre-refunded municipal bonds

    18,228       8,394  
   

 

 

   

 

 

 

Total investments

  $ 23,132     $ 14,455