XML 50 R21.htm IDEA: XBRL DOCUMENT v3.2.0.727
Product Warranties (Tables)
 6 Months Ended
Jun. 30, 2015
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,
 
2014
 
2015
 
2014
 
2015
Balance, beginning of period
$
3,244

 
$
3,469

 
$
2,965

 
$
3,363

Charges to operations
412

 
447

 
826

 
789

Deductions for payments made
(175
)
 
(318
)
 
(350
)
 
(704
)
Changes in estimates
(118
)
 
(382
)
 
(78
)
 
(232
)
Balance, end of period
$
3,363

 
$
3,216

 
$
3,363

 
$
3,216