XML 59 R21.htm IDEA: XBRL DOCUMENT v2.4.0.6
Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2013
Text Block [Abstract]  
Schedule of activity in the warranty reserve
The activity in the warranty reserve during the periods presented was as follows (in thousands):
 
Three months ended March 31,
 
2013
 
2012
Balance at beginning of period
$
47,723

 
$
44,355

Additions charged to expense
8,836

 
8,392

Warranty claims paid
(15,618
)
 
(12,317
)
Balance at end of period
$
40,941

 
$
40,430