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VALUATION AND QUALIFYING ACCOUNTS
 12 Months Ended
Dec. 31, 2012
VALUATION AND QUALIFYING ACCOUNTS  
VALUATION AND QUALIFYING ACCOUNTS

17.                VALUATION AND QUALIFYING ACCOUNTS

 

 

 

 

 

Additions

 

 

 

 

 

 

 

Balance at

 

Charged to

 

 

 

Balance at

 

 

 

Beginning

 

Costs and

 

Deductions

 

End

 

(in thousands)

 

of Period

 

Expenses

 

(a)

 

of Period

 

 

 

 

 

 

 

 

 

 

 

Description:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31, 2012:

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts receivable

 

$

2,086

 

$

998

 

$

531

 

$

2,553

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31, 2011:

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts receivable

 

3,770

 

808

 

2,492

 

2,086

 

 

 

 

 

 

 

 

 

 

 

Year ended December 31, 2010:

 

 

 

 

 

 

 

 

 

Allowance for doubtful accounts receivable

 

3,128

 

1,754

 

1,112

 

3,770

 

 

(a)      Accounts determined to be uncollectable and charged against allowance account, net of collection on accounts previously charged against allowance account.