GUARANTEES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
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 at beginning of period	$ 188	$ 246	$ 159	$ 404
Accruals for warranties issued during the period	83	43	174	85
Adjustment of preexisting accrual estimates	1	(16)	36	(160)
Warranty costs incurred during period	(72)	(87)	(169)	(143)
Warranty accrual at end of period	$ 200	$ 186	$ 200	$ 186