GUARANTEES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
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	$ 246	$ 364	$ 404	$ 397
Accruals for warranties issued during the period	43	123	85	228
Adjustment of preexisting accrual estimates	(16)	(51)	(160)	(66)
Warranty costs incurred during the period	(87)	(91)	(143)	(214)
Warranty accrual - end of period	$ 186	$ 345	$ 186	$ 345