v2.4.0.8
Changes in Warranty Reserve (Details) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Dec. 31, 2011
Warranty Reserve [Roll Forward]      
Beginning balance $ 10,574 $ 7,347 $ 2,063
Warranty expense 22,652 29,628 22,364
Warranty claims (21,109) (27,514) (20,802)
Business acquisitions   3,722 1,113
Ending balance $ 12,117 $ 10,574 $ 7,347