GUARANTEES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 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 at beginning of period	$ 397	$ 358
Accruals for warranties issued during the period	105	123
Adjustment of preexisting accrual estimates	(15)	96
Warranty costs incurred during period	(123)	(220)
Warranty accrual at end of period	$ 364	$ 357