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PRODUCT WARRANTIES
9 Months Ended
Dec. 31, 2011
Product Warranties [Abstract]  
PRODUCT WARRANTIES
PRODUCT WARRANTIES
We generally provide a warranty on parts and labor for one year after the sale and installation of each device. We also warrant our disposables products through their use or expiration. We estimate our potential warranty expense based on our historical warranty experience, and we periodically assess the adequacy of our warranty accrual and make adjustments as necessary.
 
Nine Months Ended
(in thousands)
December 31,
2011
 
January 1,
2011
Warranty accrual as of the beginning of the period
$
1,273

 
$
903

Warranty provision
1,897

 
886

Warranty spending
(1,680
)
 
(1,188
)
Warranty accrual as of the end of the period
$
1,490

 
$
601