XML 20 R33.htm IDEA: XBRL DOCUMENT v2.4.1.9
Allowance for Doubtful Accounts (Tables)
 12 Months Ended
Dec. 31, 2014
Allowance for Doubtful Accounts [Abstract]  
Allowance For Doubtful Accounts
Activity in the allowance for doubtful accounts is summarized as follows for the years presented (in thousands):

  
Year Ended December 31,
 
  
2014
  
2013
  
2012
 
Balance, beginning of year
 
$
763
  
$
724
  
$
1,057
 
Charges to expense
  
934
   
280
   
744
 
Uncollected balances written off, net of recoveries
  
(786
)
  
(241
)
  
(1,077
)
Balance, end of year
 
$
911
  
$
763
  
$
724