ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Property, Plant and Equipment (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Intangible assets	4,300	5,100
Other Assets	9,107	9,094
CAPITALIZATION OF COSTS OF SOFTWARE TO BE MADE AVAILABLE TO CUSTOMERS [Abstract]
Capitalized software development costs for software sold to customers	351	116
Capitalized for software sold to customers cost included in other assets	642	382
GOODWILL AND INTANGIBLE ASSETS [Abstract]
Reporting units	4
Concentration Risk [Line Items]
Concentration benchmark	10.00%
Product sales [Member] | Cisco [Member]
Concentration Risk [Line Items]
Percentage of concentration risk (in hundredths)	48.00%	45.00%	40.00%
Product sales [Member] | Hewlett Packard [Member]
Concentration Risk [Line Items]
Percentage of concentration risk (in hundredths)	11.00%	15.00%	19.00%
Total revenue [Member] | Large Telecommunications Company [Member]
Concentration Risk [Line Items]
Percentage of concentration risk (in hundredths)	14.00%
Software capitalized for internal [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets	171	600
Other Assets	766	790
Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Technology hardware [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Software [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture, fixtures and equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture, fixtures and equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Telephone equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	7 years