GUARANTEES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
GUARANTEES
Warranty period for certain products			1 year
Historical experience trailing period based on how product warranty accrual rates are determined			12 months
Warranty Experience
Warranty accrual - beginning of period	$ 364	$ 357	$ 397	$ 358
Accruals for warranties issued during the period	123	154	228	277
Adjustment of preexisting accrual estimates	(51)	46	(66)	142
Warranty costs incurred during the period	(91)	(182)	(214)	(402)
Warranty accrual - end of period	$ 345	$ 375	$ 345	$ 375