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Allowance For Uncollectible Accounts
9 Months Ended
Sep. 30, 2011
Allowance For Uncollectible Accounts [Abstract] 
Allowance For Uncollectible Accounts

10. Allowance for Uncollectible Accounts

The following table summarizes the activity and ending balances in the allowance for uncollectible accounts:

 

     Beginning of
Year Balance		      Additions and
Expenses		      Deductions     End of Period
Balance		  
     (In thousands)  

At September 30, 2011

    $ 9,769       $ 8,903       $ (7,864 )    $ 10,808