Product Warranty (Tables)

9 Months Ended

Dec. 31, 2012

Changes in Carrying Amount of Accrued Product Warranty Costs

Changes in the carrying amount of accrued product warranty costs for the nine month period ended December 31, 2012 are summarized as follows:

Balance at March 31, 2012	$	318
Warranty costs incurred		(170	)
Change in estimates to pre-existing warranties		(9	)
Product warranty accrual		208
Balance at December 31, 2012	$	347