BUSINESS SEGMENT INFORMATION (Details 2) (USD $)	12 Months Ended
	Mar. 31, 2015 customer	Mar. 31, 2014 customer	Mar. 31, 2013 customer
Major Customers
Number of major customers	2	3	2
Major customer - two customer A
Major Customers
Major customers amount	26,771,000		44,850,000
Major customer - two customer B
Major Customers
Major customers amount	16,212,000		30,874,000
Major customer - three customer A
Major Customers
Major customers amount		33,886,000
Major customer - three customer B
Major Customers
Major customers amount		25,863,000
Major customer - three customer C
Major Customers
Major customers amount		25,078,000
U.S. government
Major Customers
Number of contracts terminated	0	0	0
U.S. government | Sales
Major Customers
Major customers percentage	37.00%	46.00%	63.00%