Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Current Assets
Cash and cash equivalents	$ 62,091	$ 50,142
Accounts receivable	259	0
Inventory, net	334	66
Prepaid expenses and other current assets	968	1,054
Total current assets	63,652	51,262
Fixed assets, net	3,711	2,042
Restricted cash	79	79
Other assets, net	134	106
Total assets	67,576	53,489
Current Liabilities
Accounts payable	787	1,387
Accrued expenses	2,450	2,257
Deferred rent	139	759
Deferred revenue	1,110	227
Capital lease obligation	0	5
Warrant liabilities	4	126
Total current liabilities	4,490	4,761
Deferred revenue, net of current portion	0	32
Deferred rent, net of current portion	905	0
Total liabilities	5,395	4,793
Commitments and Contingencies (Note 6)	0	0
Stockholders’ Equity
Common stock, $0.001 par value; 150,000,000 shares authorized, 92,391,989 and 81,536,724 shares issued and outstanding at March 31, 2016 and March 31, 2015, respectively	92	82
Additional paid-in capital	222,959	170,909
Accumulated deficit	(160,870)	(122,295)
Total stockholders’ equity	62,181	48,696
Total Liabilities and Stockholders’ Equity	$ 67,576	$ 53,489