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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2011
Valuation and Qualifying Accounts  
Valuation and Qualifying Accounts

13.  Valuation and Qualifying Accounts

 

Our valuation and qualifying accounts as of December 31, 2011, 2010 and 2009 are as follows:

 

Allowance for doubtful accounts

 

Balance at 
Beginning 
of Year

 

Charged to 
Costs and 
Expenses

 

Deductions

 

Balance at 
End of 
Year

 

 

 

(In thousands)

 

For the years ended:

 

 

 

 

 

 

 

 

 

December 31, 2011

 

$

29,650

 

$

94,678

 

$

(112,412

)

$

11,916

 

December 31, 2010

 

$

16,372

 

$

115,478

 

$

(102,200

)

$

29,650

 

December 31, 2009

 

$

15,207

 

$

112,025

 

$

(110,860

)

$

16,372