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Valuation and Qualifying Accounts
 12 Months Ended
Mar. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts Valuation and Qualifying Accounts

Schedule II — Valuation and Qualifying Accounts

 

                                 
    Balance at
Beginning of
Year		     Additions
Charged to
Cost and
Expenses		     Deductions     Balance at
End of Year		  

Allowance for doubtful accounts:

                                

Fiscal Year Ended March 31, 2012:

   $ 2,588,000     $ 2,146,000     $ (2,339,000 )    $ 2,395,000  

Fiscal Year Ended March 31, 2011:

     2,754,000       2,434,000       (2,600,000 )      2,588,000  

Fiscal Year Ended March 31, 2010:

     2,371,000       2,868,000       (2,485,000 )      2,754,000