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Schedule II Valuation Accounts
 12 Months Ended
Dec. 31, 2012
Schedule II Valuation Accounts [Abstract]  
Schedule II Valuation Accounts
Schedule II
Valuation Accounts
(In thousands)
 
   
Balance at
Beginning
of Period
   
Net
Additions
(Reductions)
to
Expense
   
(Deductions)*
   
Balance at
End of
Period
 
                     
December 31, 2010
                               
Accounts receivable, allowance for doubtful accounts
 
$
1,420
   
$
1,063
   
$
(301
)
 
$
2,182
 
December 31, 2011
                               
Accounts receivable, allowance for doubtful accounts
 
$
2,182
   
$
(936
)
 
$
(427
)
 
$
819
 
December 31, 2012
                               
Accounts receivable, allowance for doubtful accounts
 
$
819
   
$
29
   
$
(54
)
 
$
794
 
*Primarily consists of write-offs, net of recoveries and other adjustments