XML 83 R22.htm IDEA: XBRL DOCUMENT v2.4.0.8
Product Warranties (Tables)
 6 Months Ended
Jun. 30, 2013
Product Warranties Disclosures [Abstract]  
Warranty Accrual and Cost Activity
Our warranty accrual and cost activity is as follows (in thousands):
 
Three Months Ended
 
Six Months Ended
 
June 30,
 
June 30,
 
2012
 
2013
 
2012
 
2013
Balance, beginning of period
$
6,930

 
$
2,743

 
$
6,871

 
$
4,455

Charges to operations
106

 
372

 
474

 
490

Deductions for payments made
(2,199
)
 
(145
)
 
(2,508
)
 
(1,166
)
Changes in estimates
(58
)
 
(287
)
 
(58
)
 
(1,096
)
Balance, end of period
$
4,779

 
$
2,683

 
$
4,779

 
$
2,683