Concentrations (Schedule Of Revenue By Major Customers) (Details)	12 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013
Revenue, Major Customer [Line Items]
Number of major customers	4	4
Accounts Receivable [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration	64.00%	61.00%
Customer A [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration	20.00%	17.00%	14.00%
Customer B [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration	16.00%	19.00%	15.00%
Customer C [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration	14.00%	15.00%	16.00%
Customer D [Member] | Revenue [Member]
Revenue, Major Customer [Line Items]
Percentage of concentration	12.00%	10.00%		[1]

[1] Less than 10%