XML 61 R30.htm IDEA: XBRL DOCUMENT v2.4.0.8
Warranty Costs (Tables)
 9 Months Ended
Sep. 30, 2013
Standard Product Warranty Disclosure [Abstract]  
Product Warranty Liability
During the nine and three months ended September 30, 2013 and 2012, changes in the warranty reserve consisted of the following:
 
Nine Months
 
Three Months
 
2013
 
2012
 
2013
 
2012
Accrued warranty reserve, beginning of period
$
549

 
$
537

 
$
497

 
$
540

Estimated warranty expense
376

 
526

 
161

 
207

Amounts charged against warranty reserve
(469
)
 
(458
)
 
(202
)
 
(142
)
Accrued warranty reserve, end of period
$
456

 
$
605

 
$
456

 
$
605