ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
DEFERRED COSTS AND DEFERRED REVENUES [Abstract]
Deferred costs	$ 9.4		$ 9.4		$ 8.2
Deferred revenue	$ 67.3		$ 67.3		$ 20.2
Sales Revenue, Goods and Services [Member] | Cisco [Member]
CONCENTRATION OF RISK [Abstract]
Percentage of concentration risk	45.00%	48.00%	49.00%	49.00%
Sales Revenue, Goods and Services [Member] | Hewlett Packard [Member]
CONCENTRATION OF RISK [Abstract]
Percentage of concentration risk	6.00%	6.00%	6.00%	8.00%
Sales Revenue, Goods and Services [Member] | NetApp [Member]
CONCENTRATION OF RISK [Abstract]
Percentage of concentration risk	6.00%	7.00%	5.00%	5.00%