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CONTINGENCIES (Tables)
6 Months Ended
Jun. 30, 2012
Commitments and Contingencies Disclosure [Abstract]  
Product warranty accrual activity

The following table sets forth the activity in the warranty accrual account for the six months ended June 30, 2012 and 2011 (in thousands):
 
Six Months Ended June 30,
 
2012
 
2011 (Revised)
Accrual balance at beginning of year (revised)
$
5,960

 
$
5,894

Accruals for product warranties
6,639

 
3,230

Costs of warranty claims
(5,596
)
 
(2,977
)
Accrual balance at end of period
$
7,003

 
$
6,147