9. SEGMENT AND GEOGRAPHIC INFORMATION (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 10,687	$ 12,946
Number of reportable business segments | segment	1
United States
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 4,705	4,825
China
Net revenues and long-lived assets by geographic area
Revenue, Net	1,350	3,232
Singapore
Net revenues and long-lived assets by geographic area
Revenue, Net	2,202	3,295
Netherlands
Net revenues and long-lived assets by geographic area
Revenue, Net	1,202	379
Rest of the world
Net revenues and long-lived assets by geographic area
Revenue, Net	$ 1,228	$ 1,215