BALANCE SHEET DETAILS (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018
Inventories:
Work in process		$ 5
Finished goods		1
Channel inventory		4
Total		10
Property and equipment, net:
Property and equipment, gross	$ 325	243
Less: accumulated depreciation	(177)	(134)
Property and equipment, net	148	109
Depreciation	62	52
Furniture
Property and equipment, net:
Property and equipment, gross		21
Laboratory Equipment
Property and equipment, net:
Property and equipment, gross	196	106
Computer and equipment
Property and equipment, net:
Property and equipment, gross	$ 129	$ 116