BUSINESS SEGMENT INFORMATION - NET SALES AND CONTRACT REVENUES (Details) $ in Thousands	12 Months Ended
	Mar. 31, 2016 USD ($) segment	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)
Geographical Data
Number of operating segments | segment	1
Net Sales and Contract Revenues	$ 102,987	$ 126,750	$ 190,249
Domestic
Geographical Data
Net Sales and Contract Revenues	54,870	52,130	94,427
International customer
Geographical Data
Net Sales and Contract Revenues	$ 48,117	$ 74,620	$ 95,822
Assets | International customer | Maximum
Geographical Data
Percentage of concentration risk	4.00%
Net sales and contract revenues | Total sales
Geographical Data
Percentage of concentration risk	100.00%	100.00%	100.00%
Net sales and contract revenues | Total sales | Domestic
Geographical Data
Percentage of concentration risk	53.00%	41.00%	50.00%
Net sales and contract revenues | Total sales | International customer
Geographical Data
Percentage of concentration risk	47.00%	59.00%	50.00%
Net sales and contract revenues | Total sales | Middle East & Africa
Geographical Data
Percentage of concentration risk	62.00%	63.00%	72.00%
Net sales and contract revenues | Total sales | Americas - Non-US
Geographical Data
Percentage of concentration risk	10.00%	15.00%	11.00%
Net sales and contract revenues | Total sales | Asia / Pacific
Geographical Data
Percentage of concentration risk	22.00%	16.00%	11.00%
Net sales and contract revenues | Total sales | Europe
Geographical Data
Percentage of concentration risk	6.00%	6.00%	6.00%
Sales | Total sales | International customer | One individual country
Geographical Data
Percentage of concentration risk	10.00%	16.00%	15.00%