CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jan. 31, 2017	Jan. 31, 2016
Current assets:
Cash and cash equivalents	$ 6,501	$ 4,039
Accounts receivable, net	4	7
Inventories	38	100
Prepaid expenses and other current assets	284	285
Total current assets	6,827	4,431
Property and equipment, net	120	216
Intangible assets, net		119
Other assets	154	85
Total assets	7,101	4,851
Current liabilities:
Accounts payable	2,551	1,777
Accrued expenses and other current liabilities	1,176	795
Related party payables	0	225
Total current liabilities	3,727	2,797
Long-term liabilities:
Warrant liability	403
Total liabilities	4,130	2,797
Commitments and contingencies (Note 6)
Stockholders' equity
Series A convertible preferred stock, $0.001 par value; 10,000,000 shares authorized; 1,515 and none issued and outstanding as of January 31, 2017 and 2016, respectively	1,515
Common stock, $0.001 par value; 90,000,000 shares authorized; 67,719,577 and 25,208,684 shares issued and outstanding as of January 31, 2017 and 2016, respectively	68	25
Additional paid-in capital	46,026	28,261
Accumulated deficit	(44,638)	(26,232)
Total stockholders' equity	2,971	2,054
Total liabilities and stockholders' equity	$ 7,101	$ 4,851