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Schedule II - Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2013
Valuation and Qualifying Accounts [Abstract]  
Schedule II - Valuation and Qualifying Accounts
Schedule II—Valuation and Qualifying Accounts
(amounts in thousands)
 
Description
 
Balance At
Beginning
of Year
 
Additions
Charged
Against
Operations
 
Uncollectible
Accounts
Written-Off
 
Balance
at End of
Year
Year ended December 31, 2013
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
923

 
$
(448
)
 
$
240

 
$
715

Year ended December 31, 2012
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
1,652

 
$
498

 
$
(1,227
)
 
$
923

Year ended December 31, 2011
 
 
 
 
 
 
 
 
Allowance for doubtful accounts
 
$
1,493

 
$
1,226

 
$
(1,067
)
 
$
1,652