WARRANTY OBLIGATIONS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
WARRANTY OBLIGATIONS
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	$ 358	$ 1,225
Accruals for warranties issued during the period	548	632
Adjustment of preexisting accrual estimates	152	(63)
Warranty costs incurred during the period	(661)	(1,436)
Warranty accrual at end of period	$ 397	$ 358