Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016
Current Assets
Cash and cash equivalents	$ 53,538	$ 62,091
Accounts receivable	103	259
Inventory, net	512	334
Prepaid expenses and other current assets	1,028	968
Total current assets	55,181	63,652
Fixed assets, net	3,456	3,711
Restricted cash	79	79
Other assets, net	131	134
Total assets	58,847	67,576
Current Liabilities
Accounts payable	481	787
Accrued expenses	1,715	2,450
Deferred rent	140	139
Deferred revenue	791	1,110
Warrant liabilities	9	4
Total current liabilities	3,136	4,490
Deferred rent, net of current portion	868	905
Total liabilities	4,004	5,395
Commitments and Contingencies (Note 4)	0	0
Stockholders’ Equity
Common stock, $0.001 par value; 150,000,000 shares authorized, 92,389,730 and 92,391,989 shares issued and outstanding at June 30, 2016 and March 31, 2016, respectively	92	92
Additional paid-in capital	224,388	222,959
Accumulated deficit	(169,637)	(160,870)
Total stockholders’ equity	54,843	62,181
Total Liabilities and Stockholders’ Equity	$ 58,847	$ 67,576

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.