Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017
Current Assets
Cash and cash equivalents	$ 54,974	$ 62,751
Accounts receivable	772	647
Inventory, net	461	550
Prepaid expenses and other current assets	1,661	1,144
Total current assets	57,868	65,092
Fixed assets, net	3,528	3,840
Restricted cash	127	127
Other assets, net	189	121
Total assets	61,712	69,180
Current Liabilities
Accounts payable	558	1,171
Accrued expenses	2,111	4,101
Deferred rent	165	157
Deferred revenue	854	582
Total current liabilities	3,688	6,011
Deferred revenue, net of current portion	48	58
Deferred rent, net of current portion	707	749
Total liabilities	4,443	6,818
Commitments and Contingencies (Note 4)	0	0
Stockholders’ Equity
Common stock, $0.001 par value; 150,000,000 shares authorized, 105,724,320 and 104,551,466 shares issued and outstanding at June 30, 2017 and March 31, 2017, respectively	106	104
Additional paid-in capital	266,593	261,586
Accumulated deficit	(209,419)	(199,317)
Accumulated other comprehensive income (loss)	(11)	(11)
Total stockholders’ equity	57,269	62,362
Total Liabilities and Stockholders’ Equity	$ 61,712	$ 69,180