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Fair Value (Tables)
3 Months Ended
Jun. 30, 2014
Fair Value Disclosures [Abstract]  
Schedule of assets and liabilities measured at fair value
 
         
Fair Value Measurement at June 30, 2014 Using
 
         
Quoted Prices
   
Significant
       
         
in Active
   
Other
   
Significant
 
         
Markets for
   
Observable
   
Unobservable
 
   
June 30,
   
Identical Assets
   
Inputs
   
Inputs
 
 (In thousands)
 
2014
   
(Level 1)
   
(Level 2)
   
(Level 3)
 
 Assets:
                       
    Cash and cash equivalents -
                       
       money market funds
  $ 29,141     $ 29,141     $ -     $ -  
    Short term investments -
                               
       bond mutual funds
    15,567       15,567       -       -  
    $ 44,708     $ 44,708     $ -     $ -