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Schedule II-Valuation and Qualifying Accounts and Reserves Schedule II-Valuation and Qualifying Accounts and Reserves Schedule II-Valuation and Qualifying Accounts and Reserves Schedule II-Valuation and Qualifying Accounts and Reserves (Notes)
 12 Months Ended
Dec. 31, 2014
Valuation and Qualifying Accounts [Abstract]  
Schedule II-Valuation and Qualifying Accounts and Reserves
Schedule II—Valuation and Qualifying Accounts and Reserves
Descriptions
 
Balance at
Beginning of
Period
 
Additions
Charged to
Costs and
Expenses
 
Acquisitions and
Other
 
Deductions
 
Balance at End
of Period
 
 
(in thousands)
ALLOWANCE FOR DOUBTFUL ACCOUNTS:
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2012
 
$
8,347

 
$
5,928

 
$
308

 
$
(5,113
)
 
$
9,470

Year ended December 31, 2013
 
9,470

 
7,148

 
3,633

 
(5,891
)
 
14,360

Year ended December 31, 2014
 
14,360

 
9,814

 
4,436

 
(9,184
)
 
19,426

ALLOWANCE FOR ESTIMATED RETURNS, DISCOUNTS & ALLOWANCES:
 
 
 
 
 
 
 
 
 
 
Year ended December 31, 2012
 
$
22,804

 
$
714,880

 
$
1,151

 
$
(714,143
)
 
$
24,692

Year ended December 31, 2013
 
24,692

 
797,380

 
825

 
(796,261
)
 
26,636

Year ended December 31, 2014
 
26,636

 
955,615

 
10,695

 
(961,658
)
 
31,288