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Schedule of Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure
Financial Statement Schedules

The following financial statement schedule is filed as a part of this Annual Report:

•Schedule II - Valuation and Qualifying Accounts

All other schedules are omitted because they are not required or the required information is shown in the financial statements or notes thereto.

(In thousands)
Beginning Balance
 
Additions Charged to Net Revenues and Costs and Expenses
 
Write-offs of Accounts Receivable and Credit Memos Paid
 
Ending Balance
Allowance for doubtful accounts and customer credits for the years ending December 31:
 
 
 
 
 
 
 
2011
$
2,846

 
$
9,063

 
$
(8,489
)
 
$
3,420

2012
$
3,420

 
$
9,411

 
$
(8,595
)
 
$
4,236

2013
$
4,236

 
$
8,167

 
$
(8,512
)
 
$
3,891