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Accrued Warranty Costs
 6 Months Ended
Jun. 30, 2013
Commitments and Contingencies Disclosure [Abstract]  
Accrued Warranty Costs
Accrued Warranty Costs
The Company estimates the amount of warranty claims on sold products that may be incurred based on current and historical data. The actual warranty expense could differ from the estimates made by the Company based on product performance. The following table presents the changes in the Company’s product warranty liability:
 
2013
 
2012
Balance at January 1,
$
6.9

 
$
4.2

Claims paid during the year
(1.9
)
 
(0.9
)
Warranty expense
2.6

 
1.4

Acquired warranty liabilities
—

 
3.3

Balance at June 30,
$
7.6

 
$
8.0