9. SEGMENT AND GEOGRAPHIC INFORMATION (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) segment	Sep. 30, 2015 USD ($)
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 13,358	$ 13,577	$ 26,304	$ 27,602
Number of reportable business segments | segment			1
United States
Net revenues and long-lived assets by geographic area
Revenue, Net	5,430	5,303	$ 10,256	11,251
China
Net revenues and long-lived assets by geographic area
Revenue, Net	2,864	3,310	6,096	7,109
Singapore
Net revenues and long-lived assets by geographic area
Revenue, Net	2,261	1,601	5,556	2,998
Netherlands
Net revenues and long-lived assets by geographic area
Revenue, Net	1,585	1,857	1,963	3,555
Rest of the world
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 1,218	$ 1,506	$ 2,433	$ 2,689