XML 47 R28.htm IDEA: XBRL DOCUMENT v3.3.1.900
Schedule of Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts
Description
Balance at Beginning of Year
Charged to Expenses or Other Accounts, Net
Deductions and Adjustments1
Balance at End of Year
Year Ended December 31, 2015
 
 
 
 
Allowance for doubtful accounts
$
291

$
547

$
(474
)
$
364

Year Ended December 31, 2014
 
 
 
 
Allowance for doubtful accounts
$
2,513

$
97

$
(2,319
)
$
291

Year Ended December 31, 2013
 
 
 
 
Allowance for doubtful accounts
$
2,749

$
944

$
(1,180
)
$
2,513

1 Deductions and adjustments for the allowances primarily relate to accounts written off.