Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Mar. 31, 2016
Current Assets
Cash and cash equivalents	$ 62,751	$ 62,091
Accounts receivable	647	259
Inventory, net	550	334
Prepaid expenses and other current assets	1,144	968
Total current assets	65,092	63,652
Fixed assets, net	3,840	3,711
Restricted cash	127	79
Other assets, net	121	134
Total assets	69,180	67,576
Current Liabilities
Accounts payable	1,171	787
Accrued expenses	4,101	2,450
Deferred rent	157	139
Deferred revenue	582	1,110
Warrant liabilities	0	4
Total current liabilities	6,011	4,490
Deferred revenue, net of current portion	58	0
Deferred rent, net of current portion	749	905
Total liabilities	6,818	5,395
Commitments and Contingencies (Note 6)	0	0
Stockholders’ Equity
Common stock, $0.001 par value; 150,000,000 shares authorized, 104,551,466 and 92,391,989 shares issued and outstanding at March 31, 2017 and March 31, 2016, respectively	104	92
Additional paid-in capital	261,586	222,959
Accumulated deficit	(199,317)	(160,870)
Accumulated other comprehensive income (loss)	(11)	0
Total stockholders’ equity	62,362	62,181
Total Liabilities and Stockholders’ Equity	$ 69,180	$ 67,576